Hey again guys, good news I managed to build the build I posted a bit earlier in this thread. Here's the final build.
Case: Coolermaster CM 690 II Advanced - Window
CPU: Intel Core i5-760
Heatsink: Coolermaster Hyper 212+
Thermal Paste: OCZ Freeze
MB: Asus P7P55D PRO
Sound: Creative Sound Blaster X-Fi - Xtreme Music
PSU: Antec TruePower New Series 750W - blue led
Video: MSI GeForce GTX 460 Cyclone 1GB Overclocked
Ram: G.skill Ripjaws 4GB DDR3 1333Mhz (2x2G) F3-10666CL9D-4GBRL
HD: Samsung F3 1 TB
DVD/RW: LiteOn iHAS-524 No pics or benchmarks yet I'm afraid, but I can tell you it came to around $1370 AU and doesn't include keyboard, mouse or monitor (I had them from my old computer). Some points, firstly the case is gorgeous and very well designed and nice and roomy, everything is pretty easy to get through, the cabling holes help a lot in getting around as does the removable bottom 4 HD trays, which is a great place to store your unused cables. The heatsink is massive and a bit awkward to install as a result, I would recommend installing it after you install the motherboard otherwise it's a bit harder, though still manageable. My Windows XP Install BSOD'd on first attempt with "pci.sys" 0x0000007E error, turns out this is a common error which is easily fixed by
slipstreaming SP2 onto your Windows XP install and reburning the installation to a CD or DVD (I used a DVD because I had no CDs, worked great), after this I had no issues. The soundcard, Creative Sound Blaster X-Fi, is a bit of a let down, it makes the odd crackling noise when sound is played, apparently this is an uncomfortably common problem with the X-Fi's, perhaps due to the bloatware drivers that come with it (and unfortunately there aren't any easy to obtain third party ones from my brief research). I'll have some benchmarks hopefully towards the end of the week if the computer is stable till then, so far I've been able to run StarCraft 2 on all highest graphics with not a sceric of framedrop, we'll see how it goes in the tests though. I plan on overclocking it when I have the time, currently just did a 'basic' overclock through predefined bios settings from 2.8 to 2.93ghz, nothing major but its still something for nothing (well, almost nothing). Thanks again for everyone's help and suggestions re: the build, it's much appreciated.