Welcome to GeeksToGo,
My name is Cbarnard I hope I may be of some assistance to you.
I'm sorry at the amount of time it has taken to assist you. I apologize for this we are a very busy site.
Please keep in mind this is not our job and I'm not here 24\7. It can take a little bit of time for me to reply back to you,
if it has been more than 48hrs since a reply, please PM me and I will be with you as soon as possible.
With that said lets take a look.
Everything looks pretty good on your wish list except:
Ram you could purchase PC 8500 instead of PC 6400 this will equal more speed
here is OCZ
$36 after rebate
You don't have a hard drive listed
here is a 1tb samsung
I use these in my builds and have had good success. $89
and finally a PNY 9800 gtx
$114 after rebate
and I would purchase this Vista 64
With this version you could purchase a second set of ram and have 8gb.
Keep in mind that the rebate for the ram is most likely good one time.
The PSU you specified is $39 after rebate
the MOBO you specified is $115 after rebate
and the case you specified is $55 after rebate
Right now this build will cost less than $800 after rebates
If you have any other questions let me know and I would be happy to help you with them
Good luck Cbarnard