windows explorer fake security virus

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 6:59:21 PM, on 6/22/2011
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.17098)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\PROGRA~1\AVG\AVG10\avgchsvx.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\AVG\AVG10\avgwdsvc.exe
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\Program Files\Memeo\AutoBackup\MemeoBackgroundService.exe
C:\WINDOWS\system32\mfevtps.exe
C:\Program Files\Seagate\Seagate Dashboard\SeagateDashboardService.exe
C:\Program Files\Dell Support Center\bin\sprtsvc.exe
C:\Program Files\Common Files\McAfee\SystemCore\mcshield.exe
C:\Program Files\AVG\AVG10\avgnsx.exe
C:\Program Files\AVG\AVG10\avgemcx.exe
C:\Program Files\AVG\AVG10\Identity Protection\Agent\Bin\AVGIDSAgent.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\dllhost.exe
C:\program files\real\realplayer\update\realsched.exe
C:\Program Files\AVG\AVG10\avgtray.exe
C:\Program Files\Dell Support Center\bin\sprtcmd.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Seagate\Seagate Dashboard\MemeoDashboard.exe
C:\Program Files\AVG\AVG10\Identity Protection\agent\bin\avgidsmonitor.exe
C:\Program Files\Memeo\AutoBackup\InstantBackup.exe
C:\PROGRA~1\Yahoo!\browser\ycommon.exe
C:\PROGRA~1\AVG\AVG10\avgrsx.exe
C:\Program Files\AVG\AVG10\avgcsrvx.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Trend Micro\HijackThis\HiJackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
R3 - URLSearchHook: McAfee SiteAdvisor Toolbar - {0EBBBE48-BAD4-4B4C-8E5A-516ABECAE064} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - C:\Documents and Settings\All Users\Application Data\Real\RealPlayer\BrowserRecordPlugin\IE\rpbrowserrecordplugin.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG10\avgssie.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\common\yiesrvc.dll
O2 - BHO: scriptproxy - {7DB2D5A0-7241-4E79-B68D-6309F01C5231} - C:\Program Files\Common Files\McAfee\SystemCore\ScriptSn.20110301185823.dll
O2 - BHO: Windows Live ID Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: McAfee SiteAdvisor BHO - {B164E929-A1B6-4A06-B104-2CD0E90A88FF} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O3 - Toolbar: McAfee SiteAdvisor Toolbar - {0EBBBE48-BAD4-4B4C-8E5A-516ABECAE064} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O4 - HKLM\..\Run: [MSConfig] C:\WINDOWS\PCHealth\HelpCtr\Binaries\MSConfig.exe /auto
O4 - HKLM\..\Run: [Memeo Instant Backup] C:\Program Files\Memeo\AutoBackup\MemeoLauncher2.exe --silent --no_ui
O4 - HKLM\..\Run: [Seagate Dashboard] C:\Program Files\Seagate\Seagate Dashboard\MemeoLauncher.exe --silent --no_ui
O4 - HKLM\..\Run: [TkBellExe] "C:\program files\real\realplayer\update\realsched.exe"  -osboot
O4 - HKLM\..\Run: [AVG_TRAY] C:\Program Files\AVG\AVG10\avgtray.exe
O4 - HKLM\..\Run: [dellsupportcenter] "C:\Program Files\Dell Support Center\bin\sprtcmd.exe" /P dellsupportcenter
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\RunOnce: [Shockwave Updater] C:\WINDOWS\system32\Adobe\SHOCKW~1\SWHELP~1.EXE -Update -1103471 -"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; User-agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; http://bsalsa.com) ; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648)" -"http://www.adobe.com/shockwave/welcome/"
O4 - HKUS\S-1-5-21-4076396399-1108333388-2233356946-500\..\Run: [DellSupport] "C:\Program Files\DellSupport\DSAgnt.exe" /startup (User 'Administrator')
O4 - HKUS\S-1-5-21-4076396399-1108333388-2233356946-500\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe (User 'Administrator')
O4 - HKUS\S-1-5-21-4076396399-1108333388-2233356946-500\..\RunOnce: [AVG search provider] "C:\Program Files\AVG\AVG10\SearchProvider.exe" /AFTERINST (User 'Administrator')
O4 - HKUS\S-1-5-21-4076396399-1108333388-2233356946-501\..\Run: [DellSupport] "C:\Program Files\DellSupport\DSAgnt.exe" /startup (User 'Guest')
O4 - HKUS\S-1-5-21-4076396399-1108333388-2233356946-501\..\RunOnce: [AVG search provider] "C:\Program Files\AVG\AVG10\SearchProvider.exe" /AFTERINST (User 'Guest')
O4 - S-1-5-21-4076396399-1108333388-2233356946-501 Startup: Seagate Product Registration.lnk = C:\Documents and Settings\Guest\Application Data\Leadertech\PowerRegister\Seagate Product Registration.exe (User 'Guest')
O4 - S-1-5-21-4076396399-1108333388-2233356946-501 User Startup: Seagate Product Registration.lnk = C:\Documents and Settings\Guest\Application Data\Leadertech\PowerRegister\Seagate Product Registration.exe (User 'Guest')
O4 - Startup: Seagate Product Registration.lnk = C:\Documents and Settings\Eric\Application Data\Leadertech\PowerRegister\Seagate Product Registration.exe
O8 - Extra context menu item: &Yahoo! Search - file:///C:\Program Files\Yahoo!\Common/ycsrch.htm
O8 - Extra context menu item: Yahoo! &Dictionary - file:///C:\Program Files\Yahoo!\Common/ycdict.htm
O8 - Extra context menu item: Yahoo! &Maps - file:///C:\Program Files\Yahoo!\Common/ycmap.htm
O8 - Extra context menu item: Yahoo! &SMS - file:///C:\Program Files\Yahoo!\Common/ycsms.htm
O9 - Extra button: Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\common\yiesrvc.dll
O9 - Extra button: (no name) - {B205A35E-1FC4-4CE3-818B-899DBBB3388C} - C:\Program Files\Common Files\Microsoft Shared\Encarta Search Bar\ENCSBAR.DLL
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {0742B9EF-8C83-41CA-BFBA-830A59E23533} (Microsoft Data Collection Control) - https://support.microsoft.com/OAS/ActiveX/MSDcode.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (Installation Support) - C:\Program Files\Yahoo!\Common\Yinsthelper2007261.dll
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by118fd.bay118.hotmail.msn.com/resources/MsnPUpld.cab
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1145241448016
O16 - DPF: {7B297BFD-85E4-4092-B2AF-16A91B2EA103} (WScanCtl Class) - http://www3.ca.com/securityadvisor/virusinfo/webscan.cab
O16 - DPF: {A90A5822-F108-45AD-8482-9BC8B12DD539} (Crucial cpcScan) - http://www.crucial.com/controls/cpcScanner.cab
O16 - DPF: {E77F23EB-E7AB-4502-8F37-247DBAF1A147} (Windows Live Hotmail Photo Upload Tool) - http://gfx2.hotmail.com/mail/w4/pr01/photouploadcontrol/MSNPUpld.cab
O16 - DPF: {E856B973-45FD-4559-8F82-EAB539144667} (Dell PC Checkup Installer Control) - http://pccheckup.dellfix.com/rel/41/install/gtdownde.cab
O16 - DPF: {F04A8AE2-A59D-11D2-8792-00C04F8EF29D} (Hotmail Attachments Control) - http://by118fd.bay118.hotmail.msn.com/activex/HMAtchmt.ocx
O18 - Protocol: dssrequest - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG10\avgpp.dll
O18 - Protocol: sacore - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O22 - SharedTaskScheduler: Browseui preloader - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\system32\browseui.dll
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: AVGIDSAgent - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG10\Identity Protection\Agent\Bin\AVGIDSAgent.exe
O23 - Service: AVG WatchDog (avgwd) - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG10\avgwdsvc.exe
O23 - Service: McShield - McAfee, Inc. - C:\Program Files\Common Files\McAfee\SystemCore\\mcshield.exe
O23 - Service: MemeoBackgroundService - Memeo - C:\Program Files\Memeo\AutoBackup\MemeoBackgroundService.exe
O23 - Service: McAfee Validation Trust Protection Service (mfevtp) - McAfee, Inc. - C:\WINDOWS\system32\mfevtps.exe
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\PROSetWired\NCS\Sync\NetSvc.exe
O23 - Service: Seagate Dashboard Service (SeagateDashboardService) - Memeo - C:\Program Files\Seagate\Seagate Dashboard\SeagateDashboardService.exe
O23 - Service: SupportSoft Sprocket Service (dellsupportcenter) (sprtsvc_dellsupportcenter) - SupportSoft, Inc. - C:\Program Files\Dell Support Center\bin\sprtsvc.exe

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End of file - 11441 bytes

i'm pretty sure i have a virus.  it has hidden my files and also it has dissassociated .exe files.   like when i would try to run my windows media player i couldn't.  i have had to use the system restore frequently.  but it even tries to keep me from using this.  it also has a tendency to even not let me access the web (yahoo) because it says something to the effect that this site could place your computer at risk.  this is a pretty bad virus i've been told.  and not easily found and eliminated.  but i thought i would try this fourm before i have to wipe the hard drive and try to re-install everything.  that would be a BIG hassle. when it happens it uses that legitimate-looking windows explorer shield looking thing.  then it starts trying to do all these scans and wants you to download some kind of security software or something.  anyway, it's all bogus and it's driving me nuts.  i sure hope you can help me isolate and eliminate it.  i have no idea where it might be hiding but like i say i've heard it's a pretty tricky/difficult  one to deal with.  but if you could give it a shot i'de sure appreciate!

thank you for any help you might be able to render.