Shhhh...

Thats not legal..

Thats one thing about this game..Your suppose to own or obtain* your own Software to play You can use the store bought CD,just DONT register it,With the change of the login server file,and cleint,You just opened your door to 100s of free online servers where,You dotn have to pay $10. a month to play on the game developers servers.
Its free and legit and its been online for free servers for about 5 yrs now.

If you have any questions contact me.