This is probably a silly question, but I seem to be having some trouble getting my Windows XP PC and my new Powerbook with Panther to see each other over a network. I've got a Linksys wireless router which connects to the AirPort card in the PB and to the PC over an ethernet cable. I know it sould have something to do with "workgroups" but I've tried a bunch of stuff and I just can't get it to go. Any ideas? Thanks very much.