hey elros
to play on line click on "multiplayer" on the main menu then it will say lan or online . to play online click online .
you will then have to register a user name
once you have done that u can play online woohoo the fun begins!!!!
rated games are games which u play on a quick set up .rated means that if u win the game u will gain points and if u lose ,you will lose points.
your rating starts at 1600 you could then work your way up to 1700 or 1800 or 1900 lol thats all that means
hope this helps
cya gl hf
pearl jam