Thanks for your suggestion of AV/AG programs. I've been using AVG Free, but ran a scan before uninstalling it to do a recovery and it found nothing. I haven't done the wipe yet, but someone is coming to do that this weekend. I am still hoping to find a way around that, but either way, I need to be able to get my files from the external hard drive. I assume with the programs you mentioned, the "clean" computer will not be infected just by plugging in the infected USB external hard drive?