Here's the Hijackthis log. Does it tell anyone anything?
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 12:02:15 AM, on 4/21/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.5730.0013)
Boot mode: Normal
Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.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:\Program Files\Common Files\iS3\Anti-Spyware\SZServer.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\a-squared Anti-Malware\a2service.exe
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
C:\Program Files\Intel\Intel Matrix Storage Manager\iaantmon.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\UPHClean\uphclean.exe
C:\Program Files\Viewpoint\Common\ViewpointService.exe
C:\WINDOWS\system32\dllhost.exe
C:\WINDOWS\System32\alg.exe
C:\WINDOWS\PCHealth\HelpCtr\Binaries\HelpSvc.exe
C:\WINDOWS\stsystra.exe
C:\Program Files\QuickTime\bak\qttask.exe
C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe
C:\Program Files\a-squared Anti-Malware\a2guard.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Google\Google Updater\GoogleUpdater.exe
C:\Program Files\Common Files\Microsoft Shared\Works Shared\wkcalrem.exe
C:\Program Files\STOPzilla!\STOPzilla.exe
C:\Program Files\Webshots\Webshots.scr
C:\Program Files\Viewpoint\Viewpoint Manager\ViewMgr.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Program Files\Mozilla Firefox\HiJackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =
http://www.dell4me.com/myway
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
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\Internet Connection Wizard,ShellNext =
http://multi-pops.com/adsDirect.php?cid=6819502&id=adoffer&sid=70303
O2 - BHO: SITEguard BHO - {1827766b-9f49-4854-8034-f6ee26fcb1ec} - C:\Program Files\STOPzilla!\SZSG.dll
O2 - BHO: STOPzilla Browser Helper Object - {e3215f20-3212-11d6-9f8b-00d0b743919d} - C:\Program Files\STOPzilla!\SZIEBHO.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: ImageShack Toolbar - {6932D140-ABC4-4073-A44C-D4A541665E35} - C:\WINDOWS\ImageShackToolbar\ImageShackToolbar.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: STOPzilla - {98828DED-A591-462F-83BA-D2F62A68B8B8} - C:\Program Files\STOPzilla!\SZSG.dll
O4 - HKLM\..\Run: [SigmatelSysTrayApp] stsystra.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\bak\qttask.exe" -atboottime
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [a-squared] "C:\Program Files\a-squared Anti-Malware\a2guard.exe" /d=60
O4 - HKCU\..\Run: [DellSupport] "C:\Program Files\DellSupport\DSAgnt.exe" /startup
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - Startup: Webshots.lnk = C:\Program Files\Webshots\Launcher.exe
O4 - Global Startup: Google Updater.lnk = C:\Program Files\Google\Google Updater\GoogleUpdater.exe
O4 - Global Startup: Microsoft Works Calendar Reminders.lnk = ?
O8 - Extra context menu item: &Webshots Photo Search - res://C:\Program Files\Webshots\WSToolbar4IE.dll/MENUSEARCH.HTM
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MI1933~1\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_03\bin\npjpi142_03.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_03\bin\npjpi142_03.dll
O9 - Extra button: Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MI1933~1\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\system32\Shdocvw.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
O10 - Unknown file in Winsock LSP: c:\program files\common files\is3\anti-spyware\is3lsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\common files\is3\anti-spyware\is3lsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\common files\is3\anti-spyware\is3lsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\common files\is3\anti-spyware\is3lsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\common files\is3\anti-spyware\is3lsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\common files\is3\anti-spyware\is3lsp.dll
O11 - Options group: [international] International*
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) -
http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) -
http://security.symantec.com/sscv6/SharedContent/vc/bin/AvSniff.cab
O16 - DPF: {32305793-C19A-48E7-AD2F-D87FF7B264A4} (TenebrilSpywareScanner Control) -
http://www.tenebril.com/assets/activeX/SpywareScannerV2.ocx
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} -
http://download.bitdefender.com/resources/scan8/oscan8.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) -
http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {6932D140-ABC4-4073-A44C-D4A541665E35} (ImageShack Toolbar) -
http://toolbar.imageshack.us/toolbar/ImageShackToolbar.cab
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) -
http://download.mcafee.com/molbin/iss-loc/mcfscan/2,2,0,5128/mcfscan.cab
O23 - Service: a-squared Anti-Malware Service (a2antimalware) - Emsi Software GmbH - C:\Program Files\a-squared Anti-Malware\a2service.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: DSBrokerService - Unknown owner - C:\Program Files\DellSupport\brkrsvc.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMon) - Intel Corporation - C:\Program Files\Intel\Intel Matrix Storage Manager\iaantmon.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\PROSetWired\NCS\Sync\NetSvc.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\AVLib\SPTISRV.exe
O23 - Service: STOPzilla Service (szserver) - iS3, Inc. - C:\Program Files\Common Files\iS3\Anti-Spyware\SZServer.exe
O23 - Service: Viewpoint Manager Service - Viewpoint Corporation - C:\Program Files\Viewpoint\Common\ViewpointService.exe
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