Overclocking and reducing voltage on RAM

Hey Everyone.

I just recently built my first computer. And as you probably already guessed, i know almost nothing about overclocking. My specs are:

i7 930
asus p6t
CM Hyper 212+
6 Gb Corsair XMS 1600 (PC 12800)
1 Gb MSI gtx 460
antec three hundred case

Anyways, I noticed that my RAM voltage is at 1.65 and that 1.65 is the max it should be to protect my CPU and parts. I was wondering if my RAM needed to be at that voltage and if not, how would I reduce it? Currently, my BIOS is all set to Auto. Any recommendations for this? And I was also wondering if the RAM voltage could be related to the blue screen of death that I has occured twice while I play SC 2 since I built my computer about 2 weeks ago. Anyways any help would be greatly appreciated.

And, I was wondering if I could get numbers to input to have a very very mild overclock from 2.8 ghz to maybe 3.0 or 3.2 ghz. Again, I don't know what I am doing and so do not want to mess with anything without getting input first. Thanks =]