Which is better?

I am currently working on building my own rig. Right now i have and Abit AB9 Pro. I've been given suggestions on memory and have found some really cheap stuff. for memory which would you reccomend
this
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145177

or this
http://www.newegg.com/Product/Product.aspx?Item=N82E16820146565


also is this a good video card option...
http://cgi.ebay.com/1GB-Nvidia-Gefo...oryZ3762QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Both are about the same, the first one uses less power and is made generally more for overclocking. The other one however runs at the same speed and is only 28$ after mail in rebate.

I don't know if I would trust ebay as much, newegg has the same thing for 10$ cheaper.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130341

I would recommend this one for 60$ after rebate,

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130085

thanks also 3 other questions

will a video card running on ddr3 work on a mobo running ddr2

also i'm trying to test the motherboard just to be safe. right now i dont have any memory for it. is there anywhere that i can get it running without memory?

lastly know anywhere to get windows xp cheap other than newegg or ebay

Yeah it will work, usually the specs on the g-card are separate from everything else, just meet the required expansion slot (PCI-E X16, AGP, etc.) and the power requirement and your all set.

i was wondering if this memory should work on an AB9 Pro, i mean it is kingston.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820134192

I see that both memories have the same capability. PC 6400 800 mhz. Corsair and Crucial are both very good products. I would save and buy the less expensive of the two. I am sure that they would both perform about the same. Be sure to look in your motherboard ram memory vendor's list (if there is one). This will guide you to the most compatible ram for your mobo. Graphics processors vary from price to price. You need to ask yourself how well you want your games to play. I bought a GFX card from Newegg and then traded it back in on a $300 card. The 8600 that I got first just didn't get it. Good Luck.