Home Networking in a mixed Vista – XP enviroment

Now that Vista has been released to the public, many people are trying to incorporate their new Vista machines into their exsisting Win XP home networks. Has anyone found this to be an easy task? I have come across a few problems that the Help and Support files do not address. I have installed the LLTD responder on all XP machines. It seemed to work for about a day. Now it’s not. I can’t see my shared printer that is connected to my Vista machine. Yes, I do have print and file sharing enabled in Vista. It can see the workgroup, but no printer. Any thoughts?