[{HVY-E}Jinxx]

As you can tell, this is a fairly easy fix. There are a few more ports and things to do besides 21000 though.

First I need to know what router you're using.
What kind of DSL/Cable modem are you using?
Is the Modem also working as a router or are you using a stand-alone router in series with the modem?

These are things most people don't think to ask, but they will cause you HUGE headaches if you don't know how to work around them.