Need help picking parts

[MC1993]

I am new at the art of building gaming PCs. I read a few review and these are the parts I came up with and decided to get:
1. Intel i5-3570k
2. Cooler Master Haf-x full tower case
3. 8Gb of Corsair vengeance RAM
3. Cooler Master Hyper Evo CPU cooler
4. WD black HDD
5. GPU Nvidia Gtx 670
Here is what I do not have and need help picking:
1. Motherboard
2. PSU
3. Monitor

 

[charmer]

what is your budget for the PC itself?
what is your budget for the 3 parts?