I'm curious.. I just ready Nancy's newsletters on how to avoid trojans at the following link. http://users.boardnation.com/~mickeytheman/showthread.php?t=403 BTW, thanks Nancy! Its a very good newsletter. Anway, in it she say lookout for software that has been compressed with UPX, ASPACK, INFLATE or other "file-obscuring" technologies. I know that most trojan detection programs will tell me but is there any other way to tell that a file has been compressed with one of these technologies? just curious, I've never used any of these because I have no reason to.