i've found that sysupd.exe is a beast to remove.  A few forums mention that you should:

use hijackthis to fix all entries that mention the file, reboot in safe mode and delete the files reboot again, rescan with hjt and it should be gone.  To my knowledge it doesnt have a name, dont even know if it's a trojan or not, but it seems to be common.

http://www.dslreports.com/forum/remark,10091594~mode=flat
http://www.spywareinfo.com/forums/index.php?showtopic=42217

Boot to safe mode to run this - F8 at computer turn on, and choose 'safe mode'

Check these in hijackthis, AND WITH ALL OTHER WINDOWS CLOSED, fix checked.

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://red.clientapps.yahoo.com/customize/ie/defaults/stp/ymsgr*http://my.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/ie/defaults/sb/ymsgr/*http://www.yahoo.com/ext/search/search.html
O2 - BHO: (no name) - {D319662B-D5BF-4538-ADF3-8D3E36362608} - C:\Documents and Settings\All Users\Application Data\x0ff\x0ff.dll
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - (no file)
O2 - BHO: (no name) - {549B5CA7-4A86-11D7-A4DF-000874180BB3} - (no file)
O4 - HKLM\..\Run: [SysUpd] C:\WINDOWS\sysupd.exe
O4 - HKLM\..\Run: [P2P Networking] C:\WINDOWS\System32\P2P Networking\P2P Networking.exe /AUTOSTART (OPTIONAL)
O16 - DPF: {ABD45F35-2E4C-44C0-A075-6EF1DE75398E} (ClearStream Accelerator) - http://www.riversoftware.net/x0ff.cab

The following activeX controls will reinstall when(and if) you revisit that website, UNLESS you know they are from a safe source, check to remove.

O16 - DPF: {2B323CD9-50E3-11D3-9466-00A0C9700498} (Yahoo! Audio Conferencing) - http://us.chat1.yimg.com/us.yimg.com/i/chat/applet/v45/yacscom.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.yahoo.com/dl/installs/yinst0401.cab
O16 - DPF: {41F17733-B041-4099-A042-B518BB6A408C} - http://a1540.g.akamai.net/7/1540/52/20031216/qtinstall.info.apple.com/mickey/us/win/QuickTimeInstaller.exe
O16 - DPF: {6A060448-60F9-11D5-A6CD-0002B31F7455} (ExentInf Class) - http://us.games2.yimg.com/download.games.yahoo.com/games/play/client/exentctl_0_0_0_1.ocx
O16 - DPF: {6BEA1C48-1850-486C-8F58-C7354BA3165E} (Install Class) - http://updates.lifescapeinc.com/installers/pinstall/pinstall.cab
O16 - DPF: {7D1E9C49-BD6A-11D3-87A8-009027A35D73} (Yahoo! Audio UI1) - http://chat.yahoo.com/cab/yacsui.cab
O16 - DPF: {9CCE3B43-4DE0-4236-A84E-108CA848EE6A} (WebCam Control) - http://www.webcamnow.com/broadcast/ActiveXWebCam.cab
O16 - DPF: {BAC01377-73DD-4796-854D-2A8997E3D68A} - http://us.dl1.yimg.com/download.yahoo.com/dl/installs/ydropper/ydropper1_1us.cab
O16 - DPF: {BB95299D-B65B-47E0-8DDB-697A66298C3A} (UniVoiceX Control) - http://www.webcamnow.com/voice/voice.cab
O16 - DPF: {CC05BC12-2AA2-4AC7-AC81-0E40F83B1ADF} (Live365Player Class) - http://www.live365.com/players/play365.cab
O16 - DPF: {DF780F87-FF2B-4DF8-92D0-73DB16A1543A} (PopCapLoader Object) - http://zone.msn.com/bingame/zuma/default/popcaploader_v5.cab
O16 - DPF: {E504EE6E-47C6-11D5-B8AB-00D0B78F3D48} (Yahoo! Webcam Viewer Wrapper) - http://chat.yahoo.com/cab/yvwrctl.cab
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} (MSN Chat Control 4.5) - http://chat.msn.com/bin/msnchat45.cab

Then Reboot to safe mode (F8 on boot) and delete the following files/folders:-

File > > C:\WINDOWS\sysupd.exe

Then Reboot and post a fresh log for me to check.

thanks for helping me here is my new hijack logHijackThis v1.97.7
Scan saved at 6:17:14 PM, on 5/29/2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\hkcmd.exe
C:\WINDOWS\BCMSMMSG.exe
C:\WINDOWS\system32\dla\tfswctrl.exe
C:\WINDOWS\System32\DSentry.exe
C:\Program Files\Dell\Media Experience\PCMService.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\MUSICMATCH\MUSICMATCH Jukebox\mm_tray.exe
C:\PROGRA~1\mcafee.com\agent\mcagent.exe
C:\Program Files\Common Files\Dell\EUSW\Support.exe
C:\PROGRA~1\mcafee.com\vso\mcvsshld.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I2L1.EXE
C:\Program Files\support.com\bin\tgcmd.exe
C:\Program Files\MUSICMATCH\MUSICMATCH Jukebox\mmtask.exe
C:\Program Files\QuickTime\qttask.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
c:\progra~1\mcafee.com\vso\mcvsescn.exe
C:\Program Files\America Online 9.0\aoltray.exe
C:\Program Files\Dell\Support\Alert\bin\NotifyAlert.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfAgent.exe
c:\program files\mcafee.com\shared\mghtml.exe
c:\PROGRA~1\mcafee.com\vso\mcmnhdlr.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\hjt\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.dell4me.com/myway
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.dell4me.com/myway
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer provided by Comcast
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,Shellnext = http://www.dell4me.com/myway
O2 - BHO: (no name) - {0494D0D1-F8E0-41ad-92A3-14154ECE70AC} - C:\Program Files\MyWay\myBar\1.bin\MYBAR.DLL
O2 - BHO: (no name) - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\system32\dla\tfswshx.dll
O2 - BHO: (no name) - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: McAfee VirusScan - {BA52B914-B692-46c4-B683-905236F6F655} - c:\progra~1\mcafee.com\vso\mcvsshl.dll
O3 - Toolbar: &SearchBar - {0494D0D9-F8E0-41ad-92A3-14154ECE70AC} - C:\Program Files\MyWay\myBar\1.bin\MYBAR.DLL
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar.dll
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\System32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\System32\hkcmd.exe
O4 - HKLM\..\Run: [BCMSMMSG] BCMSMMSG.exe
O4 - HKLM\..\Run: [dla] C:\WINDOWS\system32\dla\tfswctrl.exe
O4 - HKLM\..\Run: [DVDSentry] C:\WINDOWS\System32\DSentry.exe
O4 - HKLM\..\Run: [PCMService] "C:\Program Files\Dell\Media Experience\PCMService.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [MMTray] C:\Program Files\MUSICMATCH\MUSICMATCH Jukebox\mm_tray.exe
O4 - HKLM\..\Run: [VSOCheckTask] "c:\PROGRA~1\mcafee.com\vso\mcmnhdlr.exe" /checktask
O4 - HKLM\..\Run: [MCAgentExe] c:\PROGRA~1\mcafee.com\agent\mcagent.exe
O4 - HKLM\..\Run: [MCUpdateExe] C:\PROGRA~1\mcafee.com\agent\McUpdate.exe
O4 - HKLM\..\Run: [DwlClient] C:\Program Files\Common Files\Dell\EUSW\Support.exe
O4 - HKLM\..\Run: [VirusScan Online] "c:\PROGRA~1\mcafee.com\vso\mcvsshld.exe"
O4 - HKLM\..\Run: [EPSON Stylus CX6400] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I2L1.EXE /P19 "EPSON Stylus CX6400" /O6 "USB001" /M "Stylus CX6400"
O4 - HKLM\..\Run: [tgcmd] "C:\Program Files\support.com\bin\tgcmd.exe" /server
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_04\bin\jusched.exe
O4 - HKLM\..\Run: [UpdateManager] "C:\Program Files\Common Files\Sonic\Update Manager\sgtray.exe" /r
O4 - HKLM\..\Run: [mmtask] C:\Program Files\MUSICMATCH\MUSICMATCH Jukebox\mmtask.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [MPFExe] C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
O4 - HKLM\..\Run: [CleanUp] C:\PROGRA~1\McAfee.com\Shared\mcappins.exe /v=3 /cleanup
O4 - HKLM\..\RunOnce: [mcvsescn.exe] c:\PROGRA~1\mcafee.com\vso\mcvsescn.exe -regserver
O4 - Global Startup: America Online 9.0 Tray Icon.lnk = C:\Program Files\America Online 9.0\aoltray.exe
O9 - Extra 'Tools' menuitem: Sun Java Console (HKLM)
O9 - Extra button: ComcastHSI (HKLM)
O9 - Extra button: Support (HKLM)
O9 - Extra button: Help (HKLM)
O9 - Extra button: Related (HKLM)
O9 - Extra 'Tools' menuitem: Show &Related Links (HKLM)
O9 - Extra button: Real.com (HKLM)
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Windows Messenger (HKLM)
O16 - DPF: {33564D57-0000-0010-8000-00AA00389B71} - http://download.microsoft.com/download/F/6/E/F6E491A6-77E1-4E20-9F5F-94901338C922/wmv9VCM.CAB
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab

i hope everything is correct now please take a look

Still a couple...



Run Hijackthis...scan and check:

O2 - BHO: (no name) - {0494D0D1-F8E0-41ad-92A3-14154ECE70AC} - C:\Program Files\MyWay\myBar\1.bin\MYBAR.DLL

O3 - Toolbar: &SearchBar - {0494D0D9-F8E0-41ad-92A3-14154ECE70AC} - C:\Program Files\MyWay\myBar\1.bin\MYBAR.DLL

With no other windows open click on fix checked button in Hijackthis.

Reboot to SAFE MODE and Show HIDDEN FILES and folders  (a MUST)

FAQ 8 and 9 on this page: http://www.russelltexas.com/spywareinfo/faqhijackthis.htm

Open Windows Explorer: type the word explorer at Start/Run box and click OK:

Drill on down and delete the following folder:

 C:\Program Files\MyWay

Reboot in normal mode Windows and run Disk Cleaner: type cleanmgr at Start/Run. Scan all hard drives and check all categories at the end and click OK.

Browse a bit, then post a fresh log.

Texruss