My IBM A30 P4 desktop has a 40GB HD with an Ultra ATA/100 Enhanced IDE controller. I'm also using a Western Digital Caviar 120GB outboard USB HD for backing up. I'm looking for a nice fast 80GB HD to install internally in my computer. Any recommendations? I've been looking at the Western Digital Caviar SE 80GB drives and I'm confused with some of the terminology. Can a SATA drive be installed in my machine with my ATA/100 EIDE controller? Thanks guys.