How do u upgrade ur battlefield vietnam pc game so u can join server online?

i just buyed the gameHow do u upgrade ur battlefield vietnam pc game so u can join server online?
Game---website





*Mu Online---http://www.globalmuonline.com/



*Odyssey Online Classic---http://www.odysseyclassic.com/



*Ogre Island---http://www.ogreisland.com/home.aspx...



*Planeshift---http://www.planeshift.it/



*Realms of Loria--- http://www.sdegames.com/



*Realm Wars---http://www.realmwarsgame.com/



*Rilphia Saga---http://www.onlyfreemmorpgs.com/rilphiasa鈥?/a>



*RPG World Online---http://www.rpgwo.com/



*Runescape---http://www.runescape.com

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