I played c9 for a long time and have a lvl 71 char on there so just to warn you 90% of the community has quit, most the players left only speak spanish.
Netgame doesn't really update it anymore only does events during christmas, easter etc.
If you are unlucky like some of us you will freeze and error a fair bit during Party matches and Nation Wars.
Other then that it's a nice game but it's far past it's prime.. Just thought I would warn you ;p