well if you don't plan to overclock there is no real need for that board . you can save alot of money by picking a different one . going with a different board will give you the money for a better video card alone . i agree with the xp2500 .
as for sata i would say unless your going to go with the 10k rpm raptors your not really going to see a difference in speed . and i would also sugest the seagate drives for the 5 year warranty on them now . so here is my sugestions
your case 69.99 shiiped ( 54$ + 15.99 )
motherboard :
without sata 60$ shipped (55$ plus 5$ shipping )
with sata 74.18 shipped
the memory you picked is fine 87.99 shipped
hard drive
seagate 120 non sata 83.75 shipped
seagate sata 90$ shipped
your dvd burner is fine , allbe it that you will have a hard time finding media at the moment but that will change in time . 84$ shipped
so if you go with my sugesstion you get this
non sata = 385.73 shipped before the video card
sata = 406 16 shipped before the video card
to keep it under 500$ i would go with this for video
for the non sata i would go with one of these cards
ati 9600 pro 114.99 shipped
or
nvidia fx5700 113.99 shipped
the nvidia card will get ya right around 500$ , like a buck or to over . i would even do them both for the sata system it will only put ya 20$ over budget . so for a max of 520$ there ya go . it was hard to do with the buggy hyperlinking ...
duh forgot the cpu .... well hows 610 then hahaha . its late i will shut up and go to bed now .
hope this helps .
hardware
prices 
