Building my first system soon and wanna do it right.

Hi this is the first time i'm building my own system and have a few questions before i buy anything.
Here r the parts:
CPU AMD 64 x2 4200 (socket AM2)
MOBO ASUS M2N32-SLI Deluxe Wireless Edition
GPU eVGA 256-P2-N567 Geforce 7900GT KO Superclocked
RAM Crucial Technology Ballistix 1GB (2 x 512MB)
Case NZXT Apollo, w/power supply

Those are the main components, now to the questions.
1) Will the stock power supply w/my case be enough? or should i buy one
2) I've heard that some RAM doesnt work w/my mobo, do you think the ram i have listed will work?
3) Should i be worried about cooling for my graphics card?
4) Are their any other things i should be looking into? [/u]

i would definatly replace the power supply as the stock are never any good. also i would get an x1800xt as it is generlly faster an slightly cheaper

I dont understand, my friends were all telling me to go w/AMD after i had initially started out w/an intel processor. whats so great about Conroe?

Conroe's are already available for pre-order (i've only seen the X6800 and the E6600 though). But don't preorder them.... wait until they hit retail shelves. The prices are expected to drop on them once this happens....

Check the benchmarks.... the E6600 (at stock) provides you with FX-62 level performance at 1/2 the price. Tom's has done some benchmarks... Anandtech has also benched it.... and about 10 other reputable sites as well.... I believe Tom's links to some of these....