upload suspicious file(s) to www.virustotal.com and test with 40+ malware scanners
when you have the result, copy the url in the address bar and post it here for us to see

alternative
Jotti http://virusscan.jotti.org/en
VirSCAN http://virscan.org/
Metascan http://www.metascan-online.com/

Avast was unable to repair the files.
Clean, Quarantine, or Delete? http://antivirus.about.com/b/2007/03/11/clean-quarantine-or-delete.htm

can you expand the “original location” column so we can see the full location path ?