Question : Problem: Overclocking

Which is the best Overclocking settings for this mother board, I have it with 2 nVidia 8800 Gts 2 Gig of ram corsair TWIN2X2048-6400C4 an AMD 6400 CPU, I am more than disappointed when I use this computer for video games such as Call of Duty 4

Answer : Problem: Overclocking

can these help ?
http://forums.vr-zone.com/showthread.php?t=354006
http://www.overclock.net/amd-motherboards/409297-msi-k9n2-sli-platinum.html
http://www.xtremesystems.org/forums/showthread.php?t=208044