I went to install Final Cut Express on my MBP and saw it requires about 14 gigs of hard drive space, and I'm down to about 20 right now. I tried selecting my external as a source, but it wouldn't work. I have an OWC Mercury AL dual enclosure with 2 320 gig hard drives in it - running through Firewire 400. It's set up as Mac OS X Journaled. Is it possible to run the program from the drive without having to reformat it in a certain way? And if I had to reformat, what would I have to do to get it to work? Thanks!