Gigabyte X48T DQ6

hi all i would apprciate some help if you can answer thanks, okay my problem I have a Gigabyte X48T-DQ6 with a q9950 cpu and would like to know how best to overclock it what setting should i be using. It would help if someone has the same motherboard cpu as me :).

Oh why also in cpuz does my core cpu speed jump from 2400mhz to 3400mhz

If i look in system information vista it show 3400mhz stable

-----------------------------------------------------------------------------------------

Also i have seen some new systems on the internet at the ces 2008 show showing quad sli and quad crossfire what motherboards are they using?

thanks again