I like to transfer large files using Firewire Target disk mode as dcornutt posted above. If your ibook HAS FW (the latest few iterations do) this is the fastest and easiest way to do it. The only problem is those pesky desktop icons/aliases on the target disk machine, which I tend to grab and put into a folder before I do this. If you don't have firewire target disk mode, use Appletalk, turning it on for both machines, and make sure in the appletalk menu its set to 'ethernet' on both of them. You'll then turn file sharing on on the machine you want to copy from (the donor we'll call it), and make sure you have a name and password established that you remember in that file sharing menu. Then go into the chooser of the other machine (recipient) and make sure appletalk is set to ehternet. Then select appleshare from within the chooser. Once you click on appleshare, you should see the donor machines name in the dialog box on the right, and then double click on its name to log in as a registered user, using the 'donor' machines name and password (the ones that you set up in the file sharing menu). Once that machine appears as a local server on your desktop, then go to the appropriate place and copy whatever you need to. It sounds a million times more complicated than it actually is. As an owner of a Lombard PB G3 without FW, TiG4, Sawtooth G4, and a Quicksilver G4, you get pretty good at doing this kind of stuff without even thinking about it. Its actually easy.