Get DDR2 1066 if you can afford it JFvergara. The higher is technically the better, however if you got 800mhz I think you'd be fine as well. Both are plenty fast.
Also, Red Cloud, the price drops occurred as planned to $299 for the Q6600. I am not building this time around so I wanted all of your advice on something. I will probably be ordering from
www.avadirect.com and they still have the prices up at +330 more than the E6420 for the Q6600. So, Do I wait until their stock sells out or ask them to price match me or what?