I need a good roleplaying game that has good customization, a good community, high levels, and it must have GOOD ROLEPLAYING.

DONT EVEN THINK OF POSTING THESE GAMES.

NWN
NWN2
WOW
Runescape
GW

Have you considered Neverwinter Nights series, World of Warcraft, Runescape, or guild wars?

elder scrolls series?

Elder scrolls (at least IV) is single player, but you might really enjoy it, if you do get it, browse for some of the mods (especially if you are having framerate issues).

Maybe perfect world? Fantastic customization, horrible skill delay / lag thing though.

ROHAN has good roleplay and it is party based meaning if you dont got a party dont expect to have an easy grind as pot delay is 60 seconds. though u can lvl without the pots 1 mob at a time :)