System for yourself, if you dont intend to overclock, it will be very fast but if then you decide you would like to overclock, all of the below componets are suited towards that aswell.
Dell Ultrasharp 2407WFP 24" Widescreen LCD Monitor - Midnight Grey
Intel Core 2 Quad Pro Q6600 "LGA775 Kentsfield" 2.40GHz (1066FSB) - Retail
Thermalright Ultra-120 Extreme CPU Cooler
Noctua NF-S12 1200RPM 120mm Silent Case Fan - 3 Pin
Abit IP35 Pro (Socket 775) PCI-Express DDR2 Motherboard
Corsair 4GB DDR2 XMS2 PC2-6400C5 TwinX (2x2GB)
BFG GeForce 8800 GTX OC 768MB GDDR3 HDTV/Dual DVI (PCI-Express) - Retail
Razer Barracuda AC-1 Gaming 7.1 Sound Card - Retail
Western Digital Caviar SE16 500GB SATA-II 16MB Cache
Samsung SH-S203NBEBN 20x20 DVD±RW Dual Layer Serial ATA Lightscribe ReWriter
Corsair HX 620W ATX2.2 Modular SLI Compliant PSU
Antec P182 Super Midi Tower Case - No PSU
Total : £1,843.36
The Dell Ultrasharp 2407WFP 24" Widescreen LCD Monitor is one of the best 24inch screen's for the money you will get in the current market. The image quality is superb and it also looks very classy. A must have.
The Q6600 is very fast even at stock speeds, you will be very pleased with it. The QX6850 is certainly not worth the extra £400 over the Q6600 espeically since you can overclock the Q6600 to 3GHz pretty easily and you shouldn't have any real problems hitting 3.4GHz - 3.6GHz. Yes the QX6850 can also be overclocked but is their really the need to have a processor running at 4GHz+ for what you will be using your system for, to me, i dont think so. A Quad Core running at 3.4GHz will be blistering fast as it is.
The Thermalright Ultra-120 Extreme is one of the best CPU coolers you can currently get and for the price its currently at, its a steel. It will keep that Quad nice and cool even when overclocked. Since it does not come with a fan i have added a Noctua NF-S12 1200RPM 120mm Silent Case Fan which will be absoutly fine.
Abit IP35 Pro in my eyes is the best board you can currently get on the market today. It belongs to one of the newest chipset boards avalible, the P35 series. It fully supports Intels upcoming 45nm processors, fantastic overclocking potinal, great memory capabilites, a brilliant board all around.
Your looking at spending £450 on 4GB of Memory which (to put it blunty) is completely stupid. You do not need 8500 rated RAM (1066MHZ), the only reason to go for such fast Memory is if your doing Memory intensive tasks and even then thats debatable since the amount of Memory would be far more important than the actual speed in most cases.
Seriously that is a complete waste of money if you go ahead and buy what you have chosen. For what you will be using your system for, if you setup two systems, one with the memory that you have chosen and one with the memory that is listed above, you wouldn't be able to say this system has the 1066MHZ memory in or this one has the 800MHZ memory in. The difference is so small.
So i have put in 4GB of Corsair Memory for you, its 6400 rated (800MHZ) which is far from slow. Its very reliable and is from a great and very well known, reliable manufacturer. It also costs nearlly £300 cheaper than the memory that you have chosen.
Now i know that you want to go SLI or Crossifre but they are both currently a bad investment. It does not offer double the performance just becuase you have 2 phisical GPUs in your system, it does not work like that.
A single 8800GTX will be able to play most of the current games out their on max settings on a 24inch screen. You might have to turn the AA and AF down a bit when new games get released but at a res of 1920x1200 the image quality is superb anyway (even without any AA and AF) it will be hard to notice the difference. It certainly is not worth the extra £300-£350 to pay for a second card just to turn these up a bit and give you a few extra FPS.
Its best to stick with a single card and then upgrade when the next generation of cards come out.
I dont know much about the Razer Barracuda soundcard but since you have tried it already and would really like to have it, ive put it in for you.
The Western Digital Hard Drives are currently the best on the market, they are extremely fast, reliable and very quiet. Great drives to have in your system.
The Smasung DVD Drive connects to your motherboard via SATA connection this means you can cancel the onboard IDE controller which will help with boot times (slightly) but also you can get rid of them ugly IDE cables.
The Corsair HX 620 is a brilliant power supply, its built by Seasonic which just shouts quality anyway. They are very reliable and extremely quiet.
I haven't come across the NZXT case you have chosen so i cannot comment on it however the one i would recomend would be the Antec P182, the build quality is brilliant and cooling is of a very high standard.
One thing to note with the NZXT case is im not to sure if a 8800GTX actually fits in it without having to remove the hard drive cage (if you can), so something worth finding out about.
Finally Vista. Vista is a fantastic operating system (ignore all the Vista haters out their, they way over exagerate problems that they are getting which you actually find are most likely down to them and not the operating system, <sigh> at them.) Their was a few bugs here and their when Vista was first released but most of them are now fixed.
When building a new system like you are their is no reason not to go for Vista, its very stable, a breeze to use and is a great operating system overall.
Goodluck
