I am currently running a Windows NT 4.0 Domain with SP6a installed on all servers. I have one NT 4.0 Server machine acting as a Microsoft PPTP RAS server and running a firewall. Win 98 and Win 2000 clients coneect and run without a hitch. I recently had a user purchase a Windows XP Pro machine. It will connect and register on the network, but after about 30 seconds it simply disconnects for no reason. I checked my network protocols and they all seem to be correct. Is this connection even possible?