yea thanks for the quick response! ok well basically i've tried loading a tiger through the macbook but of course since leopard came on it, it won't even boot the disc. Then i tried loading tiger from a macbook pro install disc on a macbook pro.....the firewire drive didn't even mount because it seemed as though it wasn't getting enough power. I "jumpstarted" the drive by connecting a usb power source....it mounted but didn't show up as a startup disc. Wait a minute, i had already loaded tiger on the drive from an old powerbook g4. I just read that the intel macs and powerpc macs use different drive formats. So that explains why it wouldn't do the startup disc on the macbook pro.....so if i mount the drive again tomorrow by "jumpstarting" it again, maybe i should reformat the external hard drive and try to load tiger from the macbook pro install discs onto the external firewire drive.....and then connect it to the macbook and boot it up.....OMG....I THINK I JUST SOLVED MY OWN FREAKIN PROBLEM!!!!!.......if for some reason this seems like an irrational way to do this, please tell me before i work myself up for tomorrow and find that it won't work.....