Finally, you are able to play FIFA 11 online for FREE using lan.
First of all you need to download a program called "gameranger" that allows you connect to other people wanting to play FIFA 11
DOWNLOAD GAMERANGER HERE
After you have downloaded gameranger you will have to register for an account and it's completely free. You will be able to host or join a game once you have been registered. After you host or join a game, in the game menu you will have to go to " ONLINE MODES > MULTIPLAYER > LAN PLAY". Once you are there, you will enter any name you want. If you are the host you will have to create a game lobby, and if not, you will have to wait for the host to create a game lobby and then join it. Just be patient!!
If you want the most optimized experience while playing FIFA 11 online, you might wanna try lowering the quality of FIFA 11 to its lowest by going to (Program files > EA Sports > FIFA 11 > Game > fifasetup) and then choosing "fifaconfig.exe". Once you are there, under the "Display Configuration" set the Rendering Quality to "VeryLow" and the MSAAoptions to be "4x", and that's it. Now playing online should be smoother than EVER!!!