Adaware

Hello I ran KAV and Ad-aware and Ad-aware came back with this;

Name:Windows
Category:Vulnerability
Object Type:RegData
Size:15 Bytes
Location:regfile\shell\open\command "" (notepad.exe %1)
Last Activity:2-19-2006
Relevance:Low
TAC index:3
Comment:Possible virus infection, REG file extension compromised
Description:General Windows Security Issue. Your system security may be
compromised. The specifics of the possible compromised item are listed in
the comments section.

Does anyone know what this is? I had Ad-aware delete it then I ran sys mech
6 comprehensive check up, rebooted and ran Ad-aware again. Ad-aware showed
this same reg file as a problem a second time.
thanks mc