You're welcome. For RDP you just need to open port 3389.

A more secure way of handling things would be to open a higher public port and leave the private port at 3389. This greatly improves security as it won't be using the typical remote desktop port, which as Bert always points out, is the target of hackers.

Do it the first way, and if you get it working, try the second.

You can test if it's forwarded properly using this site: http://www.yougetsignal.com/tools/open-ports/