I have tried virtually everything else, followed the advice given to Matt, ran HJT scan having downloaded from this site, and here is the log file. Please help!!
Logfile of HijackThis v1.99.1
Scan saved at 8:16:37 p.m., on 7/12/2005
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:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Common Files\Ulead Systems\DVD\ULCDRSvr.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\HP\hpcoretech\hpcmpmgr.exe
C:\Program Files\Picasa2\PicasaMediaDetector.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
C:\Program Files\Startup Mechanic\StartupMonitor.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Ashampoo\Ashampoo UnInstaller Platinum Suite\UIWatcher.exe
C:\Program Files\tinySpell\tinyspell.exe
C:\Program Files\ScreenMates\Felix2.exe
C:\Documents and Settings\Nick and Rachel\Application Data\My-disgo\MyKey disgo.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\WinZip\WZQKPICK.EXE
C:\Program Files\World Time\worldtime.exe
C:\Program Files\World Time\wtdunman.exe
C:\WINDOWS\system32\HPZipm12.exe
C:\WINDOWS\system32\nvctrl.exe
C:\WINDOWS\system32\mssearchnet.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\HPZENG09.exe
C:\Program Files\Hijackthis\HijackThis.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com/
O2 - BHO: HomepageBHO - {724510c3-f3c8-4fb7-879a-d99f29008a2f} - C:\WINDOWS\system32\hp9A90.tmp
O3 - Toolbar: Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_5_7_0.dll (file missing)
O4 - HKLM\..\Run: [HP Component Manager] "C:\Program Files\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [Picasa Media Detector] C:\Program Files\Picasa2\PicasaMediaDetector.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
O4 - HKLM\..\Run: [Startup Manager Scanner] C:\Program Files\Startup Mechanic\StartupMonitor.exe
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [UIWatcher] C:\Program Files\Ashampoo\Ashampoo UnInstaller Platinum Suite\UIWatcher.exe
O4 - HKCU\..\Run: [tinySpell] C:\Program Files\tinySpell\tinyspell.exe
O4 - HKCU\..\Run: [Felix] C:\Program Files\ScreenMates\Felix2.exe
O4 - HKCU\..\Run: [My-disgo] C:\Documents and Settings\Nick and Rachel\Application Data\My-disgo\MyKey disgo.exe
O4 - Startup: PowerReg Scheduler V3.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
O4 - Global Startup: World Time.lnk = ?
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
O9 - Extra button: WeatherBug - {AF6CABAB-61F9-4f12-A198-B7D41EF1CB52} - C:\Program Files\AWS\WeatherBug\Weather.exe (file missing) (HKCU)
O17 - HKLM\System\CCS\Services\Tcpip\..\{725B9780-37BC-4B91-A81B-81175D9A9F10}: NameServer = 202.150.96.1 202.150.96.2
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe (file missing)
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: Ulead Burning Helper (UleadBurningHelper) - Ulead Systems, Inc. - C:\Program Files\Common Files\Ulead Systems\DVD\ULCDRSvr.exe