Possible infection and looking for assistance

Logfile of HijackThis v1.98.0
Scan saved at 5:42:30 PM, on 09/10/2004
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\rundll32.exe
C:\WINDOWS\System32\drivers\CDAC11BA.EXE
C:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\WINDOWS\system32\cisvc.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\Program Files\Common Files\Symantec Shared\Security Center\SymWSC.exe
C:\WINDOWS\system32\cidaemon.exe
C:\WINDOWS\System32\WISPTIS.EXE
C:\PROGRA~1\Yahoo!\browser\ycommon.exe
C:\Program Files\Yahoo!\browser\ybrwicon.exe
C:\Run\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://ca.red.clientapps.yahoo.com/customize/rogers/defaults/sb/*http://www.yahoo.com/search/ie.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://ca.red.clientapps.yahoo.com/customize/rogers/defaults/sb/*http://www.yahoo.com/search/ie.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://ca.red.clientapps.yahoo.com/customize/rogers/defaults/*http://rogers.yahoo.com
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://ca.red.clientapps.yahoo.com/customize/rogers/defaults/su/*http://www.yahoo.com
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\ycomp5_3_20_0.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: IYBookmarkHO Class - {8B11A219-80C8-4B42-B558-B8C14D1AA8C4} - C:\Program Files\Yahoo!\browser\ybmho.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar2.dll
O2 - BHO: AcroIEToolbarHelper Class - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O2 - BHO: AutoLaunch Class - {F2AA9440-6328-4933-B7C9-A6CCDF9CBF6D} - C:\Program Files\Yahoo!\browser\YSidebarIEBHO.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Program Files\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\ycomp5_3_20_0.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O4 - HKLM\..\Run: [ccApp] C:\Program Files\Common Files\Symantec Shared\ccApp.exe
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\RunOnce: [Index Washer] C:\Program Files\Webroot\Washer\WashIdx.exe "Neil"
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\RunOnce: [Index Washer] C:\Program Files\Webroot\Washer\WashIdx.exe "Neil"
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: &Google Search - res://c:\program files\google\GoogleToolbar2.dll/cmsearch.html
O8 - Extra context menu item: Backward Links - res://c:\program files\google\GoogleToolbar2.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://c:\program files\google\GoogleToolbar2.dll/cmcache.html
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Similar Pages - res://c:\program files\google\GoogleToolbar2.dll/cmsimilar.html
O8 - Extra context menu item: Translate into English - res://c:\program files\google\GoogleToolbar2.dll/cmtrans.html
O9 - Extra button: Yahoo! Login - {2499216C-4BA5-11D5-BD9C-000103C116D5} - C:\Program Files\Yahoo!\Common\ylogin.dll
O9 - Extra 'Tools' menuitem: Yahoo! Login - {2499216C-4BA5-11D5-BD9C-000103C116D5} - C:\Program Files\Yahoo!\Common\ylogin.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra 'Tools' menuitem: Create Mobile Favorite... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\inetrepl.dll
O9 - Extra button: Rogers Yahoo! Sidebar - {51085E3D-A958-42A2-A6BE-A6A9B0BAF276} - C:\Program Files\Yahoo!\browser\ysidebarIE.dll
O9 - Extra 'Tools' menuitem: Rogers &Yahoo! Sidebar - {51085E3D-A958-42A2-A6BE-A6A9B0BAF276} - C:\Program Files\Yahoo!\browser\ysidebarIE.dll
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: {217234FC-041F-4F27-84AB-8329440C4DED} (Yahoo! Photos Easy Upload Tool Class) - http://us.dl1.yimg.com/download.yahoo.com/dl/installs/ydropper/ydropper1_3ca.cab
O16 - DPF: {2EC2D949-FD31-4B8F-9463-F997FE3058F3} (InSPECS2_1 Control) - http://www.powerleap.com/cab_files/InSPECS2_1.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - C:\Program Files\Yahoo!\common\yinsthelper.dll