It takes some manual tweaking to get a mixed Vista/XP network to work properly
On small office and home office networks, Windows XP and Windows Vista cooperate about as well as cats and dogs. But you can teach them to get along.
When you combine Windows XP and Windows Vista PCs on the same peer-to-peer network, such as you might have at home or a small office, you may run into all kinds of problems. It may be difficult for your Windows Vista PCs to find your Windows XP PCs, and vice versa.