please help cant get rid of omegasearch

Hi

Have tried running hijack this as directed but these files keep coming up even though i delete them , and im still having a prob with omegasearch coming up.

Logfile of HijackThis v1.97.7
Scan saved at 20:50:55, on 17/05/2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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\Explorer.EXE
C:\WINDOWS\system32\LEXBCES.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\LEXPPS.EXE
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\tcpsvcs.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\wuauclt.exe
C:\PROGRA~1\AIM95\aim.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\Sam Ross\Desktop\Hijack This\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk/
R3 - URLSearchHook: (no name) - {707E6F76-9FFB-4920-A976-EA101271BC25} - C:\Program Files\TV Media\TvmBho.dll
O4 - HKLM\..\Run: [TV Media] C:\Program Files\TV Media\Tvm.exe
O4 - HKCU\..\Run: [TV Media] C:\Program Files\TV Media\Tvm.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [AIM] C:\PROGRA~1\AIM95\aim.exe -cnetwait.odl
O9 - Extra button: AIM (HKLM)
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/s...sh/swflash.cab

Pl