Thanks, all - for your suggestions with regard to adding large capacity HD's to my Quicksilver G4/933! Here's the Intech link for the driver ($24.95 stand-alone, $89.95 for the full OS X suite - which includes the driver): http://www.speedtools.com/ATA6 Once I've acquired the drives, I'll give it a shot: Any suggestions for the best 250G candidates? Again, am I better off to go with an external Firewire unit? Would I still have to acquire the Intech driver in that case? Thanks! Steve