|"I just recently purchased an AMD Athlon 64 X2 5600+ Windsor"|
I hope you got it really cheap. Since you're considering upgrading the board anyway, you probably should have held off getting the CPU & gone with an AM3 or AM3+ system. And don't hold yourself back just because of your old DDR2 RAM. Here's a low budget AM3 build for example:
ECS IC780M-A2 (V1.0A) AM3 AMD 770 ATX AMD Motherboard - $25 after rebate
Athlon II X3 450, 3.20GHz, Retail w/ Fan - $70
Pareema 4GB (2 x 2GB) DDR3 1333 - $22
"My new power supply is a CoolerMaster "Glite" 460w"
If you meant "Elite", that is Cooler Master's low end series. You would have been better off getting this Corsair 500W for just $30 (after promo code & rebate):
CORSAIR Builder Series 500W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply - $30
Not bad for $147.