Here's a hijackthis log
Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\SPOOL32.EXE
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\MSTASK.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\SYSTEM\RESTORE\STMGR.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\TASKMON.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\PROGRAM FILES\REAL\REALPLAYER\REALPLAY.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\WINDOWS\RunDLL.exe
C:\WINDOWS\DESKTOP\HIJACKTHIS.EXE
C:\WINDOWS\RUNDLL32.EXE
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page =
http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http://www.comcast.net/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.microsoft.com/isapi/redir.dll?prd={SUB_PRD}&clcid={SUB_CLSID}&pver={SUB_PVER}&ar=home
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page =
http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =
http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL =
http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = sas.r1.attbi.com:8000
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *r.1.attbi.com
O2 - BHO: (no name) - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton SystemWorks\Norton AntiVirus\NavShExt.dll (file missing)
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton SystemWorks\Norton AntiVirus\NavShExt.dll (file missing)
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\SYSTEM\MSDXM.OCX
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [TaskMonitor] C:\WINDOWS\taskmon.exe
O4 - HKLM\..\Run: [PCHealth] C:\WINDOWS\PCHealth\Support\PCHSchd.exe -s
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ccRegVfy] "C:\Program Files\Common Files\Symantec Shared\ccRegVfy.exe"
O4 - HKLM\..\Run: [NPROTECT] C:\Program Files\Norton SystemWorks\Norton Utilities\nprotect.exe
O4 - HKLM\..\Run: [RealTray] C:\Program Files\Real\RealPlayer\RealPlay.exe SYSTEMBOOTHIDEPLAYER
O4 - HKLM\..\Run: [QD FastAndSafe] C:\Program Files\Norton SystemWorks\Norton CleanSweep\QDCSFS.exe /scheduler /startup
O4 - HKLM\..\RunServices: [*StateMgr] C:\WINDOWS\System\Restore\StateMgr.exe
O4 - HKLM\..\RunServices: [ccEvtMgr] "C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe"
O4 - HKLM\..\RunServices: [ScriptBlocking] "C:\Program Files\Common Files\Symantec Shared\Script Blocking\SBServ.exe" -reg
O4 - HKLM\..\RunServices: [SchedulingAgent] mstask.exe
O4 - HKLM\..\RunServices: [CSINJECT.EXE] C:\Program Files\Norton SystemWorks\Norton CleanSweep\CSINJECT.EXE
O4 - HKLM\..\RunServices: [NPROTECT] C:\Program Files\Norton SystemWorks\Norton Utilities\nprotect.exe
O4 - HKCU\..\Run: [Taskbar Display Controls] RunDLL deskcp16.dll,QUICKRES_RUNDLLENTRY
O4 - HKCU\..\Run: [Yahoo! Pager] C:\PROGRAM FILES\YAHOO!\MESSENGER\ypager.exe -quiet
O9 - Extra button: Related (HKLM)
O9 - Extra 'Tools' menuitem: Show &Related Links (HKLM)
O9 - Extra button: Real.com (HKLM)
O9 - Extra 'Tools' menuitem: Sun Java Console (HKLM)
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) -
http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O16 - DPF: {166B1BCA-3F9C-11CF-8075-444553540000} (Shockwave ActiveX Control) -
http://fpdownload.macromedia.com/pub/shockwave/cabs/director/swdir.cab
O17 - HKLM\System\CCS\Services\VxD\MSTCP: Domain = earthlink.net
O17 - HKLM\System\CCS\Services\VxD\MSTCP: NameServer = 207.69.188.185,207.69.188.186