I just got back helping a friend upgrade their memory and hard drive on a dell dimension 4600c. All in all, it ended up being about four hours of work. I walked away with a free 60 gig hard drive (she is very nice). So can anyone recommend a good enclosure. I need a firewire one, I dont have usb 2 on my emac. Also, what size would the hard drive be in a slim case dell computer?