Help! New system not working.

Newbie computer maker here, and a problem (go figure, right?)

I'm putting together a AMD 64 X2 5000+, Asus M3A78-EMH HDMI M.B., 4 GB Corsiar PC800 mem, Thermal Take 450 watt P.S., only onboard video card (until save money to get a new ATI vid card). 250 GB sata H.D. and dvd 16X and 52X CDRW drives. I am running Windows XP home (I think only 32 bit )

I installed everything, and all fans ran. The problems:
both dvd and cdrw drives power lights blinked on, off, on, off, etc. The fan on the processor ran, but slowly (maybe because not hot, and case completely still open?)

I can not see anything from my monitors, either VGA or DVI hooked in. They flash green (showing connected to vid card), and I can hear my hard drive hammering, but no boot up screen is visable???

Do I need to d/l the drivers for new motherboard on a different (and working) computer I have, then try to run it? Or is my motherboard or power supply DOA?

Any help would be GREATLY appreciated??

Thank you in advane,

RayDoGG