My laptop runs on XP Pro, and we've just bought a new desktop. It's nothing fancy (doesn't have to be) and has Vista Home Premium installed. I got them networked through the wireless router modem, and enabled file sharing, but the Vista machine keeps asking for the user name and password. We didn't create a password when we set this up and I'm baffled, again. This is just a nuisance, really, not a serious issue, but if anyone could offer suggestions? Thanks.