New music/gaming system

Hello all.

I am planning to build a new system in the near future (backdated payrise being the funds!) and would like some advice. It will mainly be used to compose and arrange music (Reason 4, ACID, Soundforge etc) and play games (World in Conflict, COD4, Frontlines etc)

It will be my second home built system and I would like to get it totally right this time as I have had trouble with my current one.

First of all here is what I am thinking of using to build the beast


AMD Phenom Quad Core 9600 2.30GHz Black Edition

Asus M3A AMD 770 (Socket AM2) PCI-Express DDR2 Motherboard

Crucial Ballistix Tracer RED 4GB (2x2GB) DDR2 PC2-6400C4 800MHz Dual Channel Kit

Asus GeForce EN8800 GT 512MB GDDR3 HDTV/Dual DVI (PCI-Express) - Retail

Maxtor Diamondmax 21 250GB SATA-II 8MB Cache

Western Digital Caviar Special Edition 80GB SATA-II 8MB Cache

Antec Nine Hundred Ultimate Gaming Case

Scythe Kama-Meter Multi Functional Fan Controller

Thermaltake ToughPower 750W

Creative Sound Blaster X-Fi Xtreme Audio 7.1 Sound Card

Total £709

I have heard the Phenom's have had bug issues so I am open to changing the processor. I just want to try and get the most power for my money so I dont have to upgrade for a while. I will admit to being an AMD fanboy so I would prefer a processor from them.

I'm on a bit of a budget and not totally clued up to todays hardware marvels so any sugesstions for better components are much appreciated. Also, I do not think the power supply I have chosen is modular so I would appreciate if any one could suggest and decent 750w modular, that would be great.

Also if any one has any ritual/checklist they run through when building a machine, such as, what order to build the PC up in, what tools to have handy (apart from the obvious ones) that would be great. When I built my current PC I gave my old one away before it was built and was not aware that XP needed a floppy drive to install drivers for a SATA HDD, needless to say when I ordered the parts I neglected to order a floppy drive, what the hell would I need one of those for

Thanks for reading.