SOMEONE HELP ME WITH MY SYSTEM 6800 GS XXX

I HAVE A P4 2.6 GHZ ,2 GIG 2X 1 GIG CROSAIR RAM 400 BUS RUNNING IN DUAL CHANNEL , A GIGABYTE P4 TITAN MOTHER BOARD , 650W PSU , 6800 GS XXX GRAPHICS CARD WHICH WILL PLAY DOOM 3 ON ULTRA WITH VSYNC ON AND ANTILASING AT 8X WITH 60 70 FPS , BUT WHEN I PLAY FAR CRY AND I AM OUTSIDE THE BIULDINGS MY FPS SOMETIMES DROP TO 20 FPS HMM , PLAYS BATTLEFIELD 2 NO BOTHER 2 SOME JURKYNESS ??, AFTER I PLAY GAMES FOR A 30 MINS MY TEMP IS AT 66 DEGRESS OR SOMETHING ???? WHAT SHOULD I DO PCI X ??

You need to lower your settings in Far Cry and BF2, or you need to buy a faster videocard...

A faster platform like an Athlon64 wouldn't hurt, either.

66 degrees is just fine. It's 80+ degrees where you should start to consider an aftermarket cooler.

And please... don't type all caps. Really.