[island_dude]

What you want to do can be done, but unless you pay careful attention to the security set up, you are going to expose yourself to a lot of problems.

As others pointed out, you have to have an IP address that the machine is accessible from. It doesn't have to be static. I see that you have that part covered. You will need to have your firewall expose the right set of ports to the PC (I don't know these off hand) to pass the remote desktop service. I can do a little web research and get back to you on it.

Please understand if you don't add some sort of layer of security to this you are opening your machine up to all manner of script kiddies and hackers. It is a complete cakewalk to crack through the login security of windows XP. You would e best served buring in this behind an SSH tunnel which would be encrypted and add a lot more security. It is hard to do this with just a pair of machines though (at least XP boxes). I'll take a look and get back to you.