I'm in the market for a couple of new external firewire drives for archival purposes -- I'm a composer and visual artist and want to keep one backup of everything at home, one in a safe deposit box. I'm going to get a couple of new external drives, and I should be able to repurpose one of the ones I'm using now (probably the 120G). If one of them is 7200 rpm, I'd like to repurpose it as a media drive. Does anyone know how I can figure out whether my external drives are 4200, 5400 or 7200 rpm? Thanks!