I have purchased a 750 gig Firewire hard drive and have created several partitions on the drive for Time Machine, my iTunes library and other things. I would like to make some of these partitions able to be seen from another machine on the same network. For example my iMac would have the drive mounted and my MacBook Pro would be able to back up to this drive from the network. Is this possible, both machines are running 10.5.3..