Hi Would it be worth gutting my old (working) Dell windows xp and using the 80 gb hard drive in an external enclosure ? Would it be possible to do this for use with OS X ? And can any hard drive cassette use fire wire as long as you have a fire wire port on your external enclosure ? I know I have a 500gb in my mac so it would not be large enough for time machine but I am just wondering all the same. Thanks for your time.