Help with best budget system?

Ok im building a simple computer for my brother. im going to have 400-500 to work with. i already have 184 pin gig of ram.(2x512)'s I dunno abuot the harddrives. its wd's i think ill resuse thouse. and i already have a power supply and case. So iw as thinking

core 2 du0 177
cheap mobo 60
Im guessing 7900gs or x1950pro? not sure here.
im not sure about anything else im forgeting? thanks in advance.
Hes not gonna be a hardcore gamer with super high resolutions. Just to play lord of the rings online with decent settings and halflife 2 and prey and those types of games. on med settings.

I do not think the old RAM will work with most LGA775 MB, they take DDR2. (240? pin) Maybe you shold back down a step, find something compatible and also save money. There is always a chance you can match the RAM to a newer MB, maybe others will a an idea. I do like the GPU choice, x1950 or v79xx will serve you well on a budget even though it might be half your money. If that bothers you, drop down one step there also to a x1600 or v7600 ( or there are cheap v7900GS for like $130). CPU might look at an AMD 64 or 64 x2 with the AM2 slot. Still might hit the RAM problem but I am thinking the is a little more low end boards for AMD

My 3 yr old pc runs prey on full at 112 fps avg, take a step back, grab a 3X00+ AMD Athlon 64 series an 939 mobo with support 184pin, i suggest ASUS for this one. grab a X800XT or better and your set. thats some cheap parts nowadays.

No C2D mobo that will support DDR400?

http://www.newegg.com/Product/Prod [...] 6813127017

This one even has slots to step up to DDR2 some day.

yea i saw those Mb's but 1 its a micro atx. 2 its got onboard video.

I'd say that might be your best bet. Or at least, a decent way to go. I was actually very close to going with that combo myself (Im trying to build a decent gaming system on a very tight budget also) but I didn't like the MoBo because it lacks 1394. Still might get it though.

From what I understand, the newer Brisbane core X2's (like the one you're looking at) are better than the Windsor cores in terms of energy efficiency, but they aren't as good if you want to OC (although I'm sure you could still OC the brisbane to a decent speed). So it's a toss-up depending on what's more important.

The 7600GT is also a great card for the price.

I like this setup considering the budget...maybe someone else has another idea?

lol thanks alot guy.
Im thinkin about taking ur advice.
Wheres this exchange program for the evga.

Newegg.com isn't the answer, buddy.

I never recommend Newegg.

The only things I recommend people buy from Newegg is maybe Hard-drives.

Motherboards - Mwave.com
Ram - Thenerds.net / Mwave.com
Video-cards - Mwave.com

Gigabyte S3 965P $109.18
Mwave Gigabyte S3

EVGA 7900GS 256MB KO Edition $164.19
TheNerds.net 7900GS no rebate $164

The Pentium D is pretty much as cheap at Newegg as anywhere else. Same with ram.

Remember:
resellerratings.com offers you the best price comparison along with reseller evaluations.
Pricegrabber.com offers a zip code criteria that shows you the best TOTAL price including shipping AND tax if applicable along with reseller ratings.

Ironically, newegg is only at the top of about 35% of my product searches on Pricegrabber and Newegg is a featured seller there.