Please do the following:

Download the latest version of HijackThis:

http://www.stevewolfonline.com/Downl...HijackThis.exe

Once downloaded, follow these instructions to install and run the program:

Create a folder outside of any Temp/Temporary folders for HJT and move it there now. A folder such such as C:\HijackThis or C:\Spyware Tools\HijackThis will do.

Run HijackThis, but do not have HJT fix anything yet; only have it scan your system! Once the scan is complete, the "Scan" button will turn into an option to "Save log...". Save the log in the folder you created for HiajckThis, open the log in Windows Notepad, and cut-n-paste the entire contents of the log here.

The log contents will tell us a lot about what "nasties" have crept into your system, and once we analyse the log we can tell you what to do from there.

Logfile of HijackThis v1.99.1
Scan saved at 19:29:15, on 06/10/2005
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:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
C:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\Program Files\Norton AntiVirus\IWP\NPFMntor.exe
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Java\j2re1.4.2_04\bin\jusched.exe
C:\Apps\Powercinema\PCMService.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Zoom Telephonics, Inc\Zoom ADSL USB Modem\DSLMON.exe
C:\Program Files\LClock\LClock.exe
C:\Program Files\RocketDock\RocketDock.exe
C:\Program Files\YzShadow\YzShadow.exe
C:\PROGRA~1\Yahoo!\browser\ycommon.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\Yahoo!\browser\ybrwicon.exe
C:\PROGRA~1\Yahoo!\browser\YBrowser.exe
C:\Program Files\Sunbelt Software\CounterSpy\Consumer\sunThreatEngine.exe
C:\Program Files\Sunbelt Software\CounterSpy\Consumer\SunProtectionServer.exe
C:\Documents and Settings\Windows user\Local Settings\Temporary Internet Files\Content.IE5\W1YBC5MV\HijackThis[1].exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://g.msn.com/0SEENUS/SAOS01
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.betfair.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://uk.red.clientapps.yahoo.com/c...rch.yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://g.msn.com/0SEENUS/SAOS01
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.betfair.com/
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\ycomp5_6_2_0.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: CNavExtBho Class - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\ycomp5_6_2_0.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: (no name) - {86227D9C-0EFE-4f8a-AA55-30386A3F5686} - (no file)
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [ATIPTA] C:\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_04\bin\jusched.exe
O4 - HKLM\..\Run: [PCMService] "c:\Apps\Powercinema\PCMService.exe"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [gcasServ] "C:\Program Files\Microsoft AntiSpyware\gcasServ.exe"
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [DAEMON Tools-1033] "C:\Program Files\D-Tools\daemon.exe" -lang 1033
O4 - HKLM\..\Run: [] winlog.exe
O4 - HKLM\..\Run: [SunServer] C:\Program Files\Sunbelt Software\CounterSpy\Consumer\sunserver.exe
O4 - HKLM\..\RunServices: [] winlog.exe
O4 - HKCU\..\Run: [services32] C:\Program Files\Common Files\Windows\mc-58-12-0000137.exe
O4 - HKCU\..\Run: [DNS] C:\Program Files\Common Files\mc-58-12-0000137.exe
O4 - Startup: LClock.lnk = C:\Program Files\LClock\LClock.exe
O4 - Startup: RocketDock.lnk = C:\Program Files\RocketDock\RocketDock.exe
O4 - Startup: UberIcon.lnk = C:\Program Files\UberIcon\UberIcon Manager.exe
O4 - Startup: YzShadow.lnk = C:\Program Files\YzShadow\YzShadow.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: DSLMON.lnk = C:\Program Files\Zoom Telephonics, Inc\Zoom ADSL USB Modem\DSLMON.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra button: BT Yahoo! Sidebar - {51085E3D-A958-42A2-A6BE-A6A9B0BAF276} - C:\Program Files\Yahoo!\browser\ysidebarIE.dll
O9 - Extra 'Tools' menuitem: BT &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: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {1754A1BA-A1DF-4F10-B199-AA55AA1A120F} (InstallerBehaviorFactory Class) - https://signup.msn.com/pages/MsnInstC.cab
O16 - DPF: {231B1C6E-F934-42A2-92B6-C2FEFEC24276} (yucsetreg Class) - C:\Program Files\Yahoo!\common\yucconfig.dll
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\common\yinsthelper.dll
O16 - DPF: {31E68DE2-5548-4B23-88F0-C51E6A0F695E} (Microsoft PID Sniffer) - https://support.microsoft.com/OAS/ActiveX/odc.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://groups.msn.com/controls/PhotoUC/MsnPUpld.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/Ms...Downloader.cab
O16 - DPF: {CE69F98F-2AF3-4306-BAC6-A79070EDA1B4} (Zylom Loader Object) - http://eu.download.games.yahoo.com/z...ylomloader.cab
O16 - DPF: {DF780F87-FF2B-4DF8-92D0-73DB16A1543A} (PopCapLoader Object) - http://download.games.yahoo.com/game...ploader_v6.cab
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} (MSN Chat Control 4.5) - http://chat.msn.com/controls/msnchat45.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{4BE194D9-28E4-4DC2-959A-4DED40EE1CFB}: NameServer = 62.6.40.178 194.72.9.38
O18 - Protocol: msnim - 0 - (no file)
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
O23 - Service: Norton AntiVirus Auto-Protect Service (navapsvc) - Symantec Corporation - C:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: Norton AntiVirus Firewall Monitor Service (NPFMntor) - Symantec Corporation - C:\Program Files\Norton AntiVirus\IWP\NPFMntor.exe
O23 - Service: SAVScan - Symantec Corporation - C:\Program Files\Norton AntiVirus\SAVScan.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\COMMON~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: SmartLinkService (SLService) - - C:\WINDOWS\SYSTEM32\slserv.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
O23 - Service: YPCService - Yahoo! Inc. - C:\WINDOWS\system32\YPCSER~1.EXE

Any help with understanding all that would be much appreciated.

Anyone?