Overclocking Corsair Dominator & Intel Q8300 on ASUS P5Q Deluxe

Hi, I'm a first time overclocker here so I'm a complete novice at this. My PC setup is as follows:

CPU: Intel Core 2 Quad Q8300 @ 2.5GHz
Mobo: ASUS P5Q Deluxe
RAM: 4GB (2x2GB) Corsair Dominator DDR2 1066mHz CM2x2048-8500C5D
HDD: 1TB Generic
PSU: 450W Generic (Soon to become OCZ GameXstream 850W SLi)
GPU: nVIDIA 9800GT 1GB
Case: Antec 1200
OS: Windows 7 x64


I'm trying to overclock the RAM so it will put out 1066mHz instead of the 533mHz (EPP i believe) it is currently running at.

I've recently tried overclocking my CPU with guidance from this and a few other websites and I managed to get 3.0GHz out of it. However I think the PSU is running near to capacity (hence why I'm getting a much beefier PSU in the 850W GameXstream) and was a bit taxed as the PC started to have sum weird problems relating to some sort of stuttering during media playback (but may be due to teething problems with Windows 7 - I'm not sure).

For the moment everything is running at stock speeds with my mobo's Ai Tweaker running everything in full auto mode so as not to destroy anything due to human error (read: my own stupidness lol).

So basically I'd like to know if my motherboard can handle being overclocked in terms of CPU and RAM? And ostensibly what timings, voltages and any other bits need to be fiddled with in order to get the best speeds out of my components?

Any and all help on this is massively appreciated and whomever replies to this with helpful stuff is a legend!  

If I've missed out anything important let me know and I'll try my best to discover the info required.

Cheers,
Andrew