new build intel.help please

[THC_SsSsSnake]

on my list is

ASUS p5k premiumwi/fi or Asus p5k,1 is £125 and the other £78.I dont know which one to go for.

Intel core2 duo E6850 lga775 conroe

Corsair 2gb dominator pc28500c5 twin

Not looked into buying since my present amd4400dual build nearly 2 years ago so would really appreciate any input if these are decent matches etc?
thankyou very much

 

[THC_SsSsSnake]

doesnt XP only allow 2 gig?I dont know about overclocking

 

[THC_SsSsSnake]

so it will allow me to put 4 gig in then? just wont use all.do most of the new boards have 4 ram slots or do i need 2x 2gig sticks?
thanks