I have a few XP Pro machines on a workgroup named, appropriately, "WORKGROUP." I used to be able to share data and printers between the computers, but now for some reason I can't view other computers on the network and, subseauently, can't share anything. When I try to view computers on my network, I just get a nasty message telling me I don't have permissions or something to that effect. All computers are on the same "WORKGROUP" and have the same IP subnet. Any ideas?