Hello,
I just got a new D-Link router and can't get it to port forward

I've tried all sorts of combinations of IP addresses but I am still missing
something.

It's a D-Link DIR-825. I'm not too technical with things, but I'm
running XP SP2, my internal (network) IP is 1XXXXXXXXXXXX (static),
my external IP is XXXXXXXXXXXXXX.
When I try to open and host a game the IP at the bottom is XXXXXXXXXXX.
Right now, the best I can get is this message:
ADDRESS: 127.0.0.1
CONNECTION FAILED
FAILED TO START SERVER ON PORT 6260
PLEASE MAKE SURE YOU HAVE STARTED ONLY ONE INSTANCE OF THE GAME.Help Anyone??
Cheers, and I look forward to hosting (again)!