> If it uses some non-standard scheme such as writing to the > very last sector > on the disk, I think it would technically survive a reformat > or an fdisk, or > just about any normal means of accessing a disk. I would > think it would then > have to somehow "hide" this normal access. Writing to some normally-inaccessible part of the disk doesn't do any good; all it does is put something into not-easily-destroyed storage. Storage of a program is useless without something to activate that program. Steve Dirickson [log in to unmask] WestWin Consulting (36) 598-6111