Remote Desktop - Step 1 - Dynamic DNS 4/8/2009 All Remote Desktop posts
The first thing you need to do is aquire a Dynamic DNS account. If you know you have a static IP address, then you can probably skip this step. DynDNS.com is a service that I use that is free and integrates with most routers that I've come across. There are many other Dyamic DNS Service Providers out there so go ahead and pick the one you think has the best features. What a dynamic DNS service does is forward requests pointing to a friendly name (http://hunterconcepts.dyndns.org) to your dynamic IP address. 
In Step 2 I will explain how to bind this account information to your Router. If you do not have a router and have decided to go with DynDNS.com as a service provider, they have a client application that will keep your hostname's IP address current.