i am in a similar situation, and here is my build
$169.00 Shipping+ 4.75 =173.75 (leaning towards this)
189.00 shipping+ 4.69 = 193.69
$102.99 shipping +$4.85 = 107.84 (my backup)
$139.99 shipping+ $4.85 =144.84 (out of stock)
(Front side bus is 800/1066 MHz and my proccesser is 533, not sure if it will work. if it will i am going with this card.)
Memory Installed 1 GB (2 x 512)
Speed supported PC2-3200 MB/sec
Type 240 pin, DDR2 SDRAM
200 GB SATA
case ATX form factor
$41.99 shipping+ 15.99 = 57.98
$33.95 shipping+ $6.99 = 40.94
total cost= 380.51 to 437.45 (depending on choises)
but for that i have the processor, hard drive amd memory already.
ur definately gunna want pci-E slot
go with an amd processor (god! i cant spell tonight)
ur ram looks good, but you want a sata hard drive
use newegg.com, it is MUCH easier to find what u want there.
go cheap on the case, 400w Power suply unit should do you.
for the love of god get a better vid card!
if you are really tight, try this vid card
you wont see eye candy, but you will run most games at at least mid settings.