Upgrading my pc, and I need help

Right now I am running a Coolermaster 600w PSU (I hear they suck, why?), EVGA 8800 GT Superclocked, C2D e6300, 2gig of garbage ram, and some no-name mainboard that came with my computer (I cant overclock, or even turn off speed stepping). So I decided that I want to upgrade my motherboard, ram and processor. I originally looked at picking up an Asus Maximus Formula, C2D E6750 (and overclock it instead of buying a 6850), and 2gig's of Kingston HyperX 2x1GB PC2-8500 ram. I can afford it, but I want to trim the price down so I came to the experts and humbly ask for your advice.
Since my graphics card is pcie-2.0 capable, I wanted to go with the x38 chipset, plus I like the option of getting ddr2-1066 ram. So I was wondering is the speed gained from pcie2 and ddr2-1066 ram worth the extra money I have to spend, because I can cut at least $150 by going with a p35 chipset and ddr2-800. Since I have chosen Nvidia, the crossfire support of the Maximimus Formula is unnecesary to me as well. As far as the processor is concerned should I even buy the e6750 at all? I do have a 6300 and a new processor will set me back $230 after taxes (I live in Canada). My other concern with doing a bigger overclock on my 6300 is that the last time I oc'd was way back when I took my pII 300 all the way up to a blistering 3 twenty-something (yeah, that long ago). Thanks for the time and your help is greatly appreciated.

Not really, no. You will notice almost no difference between PCI-E 1.1 and 2.0, in fact, most GPU's don't even use all the bandwidth provided by PCI-E 1.1. As for the RAM.... unless you're into some mighty high OC's, just go with DDR2 800.

Use Rivatuner and up the speed of your fan. I know many 8800GT's have fan problems where the fan never exceeds 24% speed. It should probably be up around 60% or higher under load.

I would go for the P35, since you are not using Crossfire and save the extra money.
For memory I would choose from Patriot, Crucial, OCZ and Corsair.
Here's some overclocking help.
Core2duos are great overclockers:

http://www.tomshardware.com/forum/ [...] uals-guide