Hmmm...off the top of my head, this is what I come up with:
Some accompanying notes:
Your overclocking potential is likely to be RAM-limited. The GEIL is good RAM but not premium overclocking RAM. It should be good to ~450FSB on 5-5-5-15 timings, perhaps a bit beyond. On an E6300 that'll get you to 3.15GHz. This would still be great performance, beating the stock performance of Intel's £1000 quad core CPUs with a £115 chip.
However if you could spare the extra £20 to get an E6400, the increase from a x7 to a x8 multiplier might give you scope to get more clocks from your CPU within the boundaries of the RAM's capabilities. Then again, it might not, depending on the chip and your luck. The Arctic Freezer 7 is a great cooler for the money, its performance is only a few degrees shy of the big towers that cost over twice as much (Tuniq Tower, Scythe Ninja, Thermalright Ultra-120). Of course, when it comes to overclocking,
I can't promise anything and nor can anyone else. Your mileage may vary, and your experiences will probably differ from anyone else's on the same hardware. But this setup should give you some options.
On the other hand your gaming will be GPU-limited. The performance of even moderately OC'ed Core 2 chips exceeds the capabilities of all but the most expensive graphics cards currently out there. The X1950 Pro is the best mid-range card at the moment. From what I've seen in tests it'll give you about 70FPS in most current games on mid-settings. There are plenty of reviews on the various hardware sites out there (whose names I obviously ought not to mention here as these boards belong to an industry competitor) so you can see if the performance meets your expectations. I've chosen the Sapphire as it's in stock and in production now, but the Powercolor is the same price in pre-order if you have any preferences for manufacturer.
The 17" monitor I chose isn't really an informed decision, it seemed to fit the budget and spec. Again, £20 more might be welcome, to get a 19" screen instead.
The 320GB Barracuda is on offer this week and only costs £2 more than a 250GB one. That's an extra 35GB/£1 which is pretty good if you asked me
However there is an element of luck here. Some Barracudas come with a sticker on the spindle, which indicates they're the quiet-running drives. Others have no sticker and have very loud seeks indeed. That's why some review sites comment on their noisiness, while others don't. If silence is very important to you, you might prefer to go with a WD Caviar SE16 series or a Samsung Spinpoint.
All in all, you get a very decent system, a Lian Li case, a Corsair PSU (which many regard as best in their category), a decent and quiet GFX card, good overclocking potential and 2GB RAM. Feel free to tailor to your needs, or reject the build entirely, it's your system after all, and I've only taken about 10 minutes over this
