Right i'm about to order a new motherboard, CPU and memory. I currently have a AMD 64 3500+ and an Abit Fata1ty Mobo and 2GB of DDR ram. Could someone please check this spec to see if i've missed something
Also will I need any special cables that AMD motherboards don't use. What i'm about to buy:

OCZ 4GB (2 x 2GB) PC2-5400C5 Dual Channel Vista Upgrade Gold Series DDR2 (OCZ2VU6674GK)
Abit IP35 Pro (Socket 775) PCI-Express DDR2 Motherboard
Intel Core 2 Quad Pro Q6600 "Energy Efficient 95W Edition" 2.40GHz (1066FSB) - Retail
Tuniq Tower 120 CPU Cooler (Socket 478/754/939/940/AM2/LGA775)

I've decided to buy 4GB of ram while its cheap and can only see it increasing in price as the manufacturers stop making DDR2 and start making DDR3.

Thanks in advance
Sam

Nice. Will you overclock? If yes, the Tuniq Tower is a great choice but that RAM isn't. If not, the Tuniq Tower is still useful, but you don't really need it.

That motherboard is good, I hear. That is, I read a few reviews and they were positive. No actual experience with it though.

Have you checked the memory compatibility list on Abit's site? It's safer to get PC2-6400 (DDR2-800).

Don't know if there is enough room for the Tuniq tower on that mobo. Mabe somebody has tried the combination and can help you.

If you're not on a very tight budget you should look at GA-P35-DS3R. It costs a bit more but it's worth it.

i agree with aevm for ram , also for motherboard , P35 DS3R is good so are ASUS P5K and ASUS P5K-E

Right, I was planning on overclocking to about 2.8 / 2.6 nothing major, just so I get a little more performance.
Do you think i'd be best off, not bothering overclocking and getting rid of the TT heatsink or buying something like
OCZ 4GB (2 x 2GB) PC2-6400C5 Dual Channel Vista Gold Series DDR2.

Thanks for the advice so far

No problem

Yes to the PC2-6400, that's what I got myself. OK, mine is called OCZ Vista Upgrade, the one you suggested is probably a bit better.

I wouldn't bother overclocking, but that's just me. So far I've seen my Q6600 working at 27% on all cores only once, when I was compressing a DVD and some wav files and surfing and watching a movie, all at the same time. I don't intend to do that sort of thing often, I was just trying to see how fast my new toy was. When I see it reaching 95% and staying there I'll think about overclocking, but not before. You on the other hand may want to play Flight Simulator and I'm sure you'll see 100% there...

You could keep the TT even without overclocking. It can reduce noise and make the CPU last longer. Mind you, who cares if your Q6600 dies after 4 years without the TT or after 7 years with the TT, you'll upgrade before that anyway... (BTW, just inventing numbers here. Nobody has ever owned a Q600 for 4 years so far, of course, to verify this theory)