What Power Supply Do I Need?

I am about to purchase components for a new build and need help with choosing the appropriate power supply. Here is a list of my components:

GIGABYTE GA-EP35-DS3L Intel P35 Core 2 Duo (Desktop) Socket 775 1333 MHz PC2-8500 (DDR2-1066) ATX Motherboard

INTEL BX80571E5200 Pentium Dual Core E5200 2.50 GHz 800 MHz Socket 775 2MB Desktop Processor

COOLER MASTER Hyper TX - Universal RR-CCH-L9U1-GP CPU Cooler

OCZ OCZ2RPR10664GK 4GB PC2-8500 (DDR2-1066) DDR2 Memory


Drives:
1 IDE
2 SATA


Yes, I will be OCing. I am considering my purchase from www.zipzoomfly.com so a power supply from that website would be most helpful. Thank you.