I just finished scanning my system and it said that I had a trojan.

C:\WINDOWS\MEMORY.DMP: Trojan.URLspoof.gen.2 FOUND

How do I get rid of this trojan? Is the only option a reformat/reinstall of windows? I thought ClamWin was able to scan and remove viruses and trojans and etc. Was I wrong?

[EDIT] Forgot to add the whole detail of the scan result.

Scan started: Wed Jan 18 20:07:06 2006

ERROR: Can't open file C:\WINDOWS\system32\config\default
ERROR: Can't open file C:\WINDOWS\system32\config\SAM
ERROR: Can't open file C:\WINDOWS\system32\config\SECURITY
ERROR: Can't open file C:\WINDOWS\system32\config\software
ERROR: Can't open file C:\WINDOWS\system32\config\system

C:\WINDOWS\MEMORY.DMP: Trojan.URLspoof.gen.2 FOUND
-- summary --
Known viruses: 42492
Engine version: 0.88
Scanned directories: 2001
Scanned files: 29679
Infected files: 1
Data scanned: 9583.05 MB
Time: 8530.903 sec (142 m 10 s)

if clamwin did not find this trojan elsewhere after you scanned the whole drive(s), then there is no reason to be concerned. Most likely it was a false positive in a memory dump file (file created after windows crashed). Simply remove C:\WINDOWS\MEMORY.DMP file and empty your recycle bin. Then do a full scan just to be sure.