gamespy to play MX vs ATV Unleashed but won't play 2 players on same cdkey why?

[Mxrider36 (A)]

I wonder why i have to be forced to buy 3 MX VS ATV unleashed PC games in order to play the game with my kids, On Gamespy, I think its looking at the games CD key and not allowing me to install the same CD game on 3 of my PC's at my house to play online with my kids using the same CDKEY...I got a hold of the NoCD patch to do this

Does anyone know how i can find out what my IP is for in multiplayer?..while using my Wireless Router Linksys?

I think i have to go into a Dos Window and type some kind of command.

[Bulldog]

open a command window and type:

ipconfig /all

Then hit the Enter key.

This will give you all of your IP address info for all the network cards in the computer.

However, if you need the public IP address of your router then you will need to go into the admin console for the router.  One of the tabs will show the public IP address.