E6600 upgrade

I have a E6600 Should i upgrade or am i fine? I use the comp mostly for gameing.

Well an e6600 should well suffice for everyday use such as gaming to multimedia. However if you plan to overclock maybe upgrade to a 45nm CPU like an e8400/e8500/e8600. Or you can wait for the new intel Nehalm cpus to get released and upgrade you entire system.