Rerouting IP

I am on the mve alot and my IP changed depending on where i am if i am on a router or not. I am using a client-server MMORPG game which players “dial” my ip addy to get on the game server on my computer. My question is there anyway i can use my website as the IP and reroute it to whatever IP i current have so the PLayers do not have to change the IP addy everytime they try and log on?