DSO Exploit?

Ok, I run spybot and get this: DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\S-1-5-18\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3

DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\S-1-5-21-1493418154-596957751-681764103-1006\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3

DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3

DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3

DSO Exploit: Data source object exploit (Registry change, nothing done)
HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1004!=W=3


--- Spybot - Search && Destroy version: 1.3 ---
2004-05-25 Includes\Cookies.sbi
2004-05-29 Includes\Dialer.sbi
2004-05-28 Includes\Hijackers.sbi
2004-05-28 Includes\Keyloggers.sbi
2004-05-12 Includes\LSP.sbi
2004-05-28 Includes\Malware.sbi
2004-05-04 Includes\Revision.sbi
2004-04-12 Includes\Security.sbi
2004-05-28 Includes\Spybots.sbi
2004-05-24 Includes\Tracks.uti
2004-05-28 Includes\Trojans.sbi

This keeps showing up after I fix it. I have d/led a bad copy of mozilla firefox that won't let me get rid of it. It won't show up in safe mode either.

winxp
compaq presario5k
1.2gig processor/512mb ram

 

See here: http://www.majorgeeks.com/vb/showpost.php?p=355256&postcount=6

and here: http://www.majorgeeks.com/vb/showthread.php?t=33449&highlight=dso+exploit