eeermh,
avast is usually considerable better in detecting WORMS than Adware or Spybot, cause worms are of course a classic target for AV-programs
whereas ad-aware & SSD are better in detecting adware & minor spyware
*
@Luke
please work through the link "VirusRemoval" below in my sig. and then:
- post a hijackthis-Log for diagnosis
- tell us where this malicious file is located on your PC: full path/folder/filename
- test it with onlineScanners, e.g. JOTTI
if possible, send it in to virus (at) avast.com
and why not afterwasrds follow the removal-instructions here:
TrendMicro