I scanned the A drive and suspect discs with two different virus scans (plus my entire system for good measure). No trace of FORM was found. Avast turned up nothing too.
I think Mcafee cleaned it, for I have noticed that occasionally it will warn me of a file that cannot be cleaned/removed AFTER it has actually cleaned/removed it. This seems to be because it has removed the file but hasn't yet told itself that the file no longer exists (if you see what I mean) - i.e., it can't clean what it has deleted.
In the words of the onld rhyme:
"As I was scanning here and there, I met a virus that wasn't there. It wasn't there again today. Oh, how I wish it would go away!"