Hello this is the first time I am ever going to build a system. Here are the specs of it, please comment on them if they are good or bad choices!
 
Total Cost: $1612
CASE: Antec Nine-Hundred
OS: OEM Vista Premium 32 bit
MOBO: Asus P5N-D SLI 750i
CPU: Intel Q6600
HEATSINK: Zalman 9500A
PSU: OCZ GameXStream 700W
RAM: Crucial Ballistix DDR2 800 (4 x 1gb)
VIDEO CARD: XFX 8800GTS Alpha Dog overclocked
HDD: Segate 7200.11 500gb (32mb cache)
DVD BURNER: SAMSUNG 20X DVD±R LIGHTSCRIBE
SOUND CARD: Creative Sound Blaster X-Fi XtremeGamer
MONITOR: SAMSUNG 2253LW 21.6 inch
SPEAKERS: Logitech Z-2300
 
This is all from newegg so if you want to look it up, go there.
 
PLEASE COMMENT ON THIS BECAUSE THIS IS MY FIRST BUILD AND I DON'T TO MAKE A DRASTIC MISTAKE!

you great with the seagate hard drive.
 
im just an amatuer, but i think that windows vista 32 bit only recognized 3 gb memory, so there is no point in having 4 unless you get 64 bit. you better double check this tho, as i may be wrong =p
 
ive heard abit mobo is better than asus
 
a lot of people recommend your case, so your fine there. also your processor is great.  
 
better get a second opinion tho =D

but you are missing an optical (cd) drive

whoops sorry didnt see the lightscribe

Get vista 64. There is no reason not to, especially if you are getting 4gb RAM. Otherwise looks nice to me.

I would get 2x2gb memory so you have the option to upgrade 8gb if you ever needed to do that, also the XIGMATEK HDT-S1283 120mm Rifle CPU Cooler on newegg is only $37 and is the highest rated cpu cooler on frostytech.com, so I would get that