I want to setup a remote desktop connection to my XP machine. In order to do this I have to connect via vpn. I have everything setup on the windows machine. It will let me connect to itself by vpn, using a 192.168.x.y address. I have setup that computer as a dmz on my router so everything is passed to it. I'm using a linksys router, have pptp fowarding on, etc. It still is getting stuck on varafying username and password. Any guesses?