Need help building a computer

[Guest]

I need help customising my computer.. I lack the knowledge in computer parts and knowing how to spend my money wisely. I have a budget of 1200 Australian Dollars. from some research I am interested in buying an i7 930, an HD 5970, 6-8G of RAM and a corsair power supply, because ive read they have the best power supplies... Im so clueless, are there any better suggestions for my budget? what kind of case/motherboard do I need for these parts?!

 

[guanyu210379]

AUD1200 = about €830
I will try to help finding the components, but first
Tell us what you already have beside Proc, GPU, RAM, and mobo:
HDD? Casing? Monitor? Keyboard? Mouse? Speaker? OS?
And this perhaps you need :
WLAN card? WLAN router? etc.