I have SBS 2008, i have a client who uses RWW, it works find from every windows 7 computer but he has a laptop that is XP.
the laptop does not connect most of the time.if you click the computer to connect to it prompts for password and username, i enter domain name/username and password. it almost instantly comes back asking for it again. occasionally it works.
the laptop is clean and fully updated and ran scans for virus's no issues.
the workstation he is connecting too is windows 7 if it matters.