Freezing and extremely long boot times

Here are my components, if anyone knows of any problems with any of these components, please let me know. My boot times are close to 10 minutes, Once in windows the computer will start freezing every 2 minutes where i am unable to do anything for 30 seconds to a minute at a time. I have switched MOBO, switched ram, updated bios... I am a newbie and cant seem to get this running properly.

Antec Sonata III 500 Black 0.8mm cold rolled steel ATX Mid Tower Computer Case 500W Power Supply - Retail
Item #: N82E16811129024

ASUS M4A79 DELUXE MOTHERBOARD

Seagate Barracuda 7200.10 ST3250410AS 250GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
Item #: N82E16822148262

AMD Phenom 9600 Agena 2.3GHz Socket AM2+ 95W Quad-Core Processor Model HD960ZWCGDBOX - Retail
Item #: N82E16819103244

G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL5D-4GBPQ - Retail

LG 20X DVD±R DVD Burner w/ SecurDisc Tech Black SATA Model GH20NS15 - OEM
Item #: N82E16827136149

nMEDIAPC ZE-C68 All-in-one USB 2.0 Card Reader w/ USB Port - Retail
Item #: N82E16820132016

WINDOWS XP

What kind of issues can you get from not having a big enough power supply.