Do you guys know what the fuck you are even talking about?
Jmuss- Laptop ram.
Iconik- x64=/= 64 bit, most computers now use the x86 instruction set, you may be getting x64 confused with x86-64 meaning the x86 instruction set in 64 bit.
Killa- He should move on from windows xp as soon as possible, even though I'm still on an XP machine, Microsoft is dropping XP support for the regular consumer, meaning no more service packs or hotfixes in the future, plus all newer games are going to eventually require Windows 7 to work.
What I would recommend is scraping together 1000 USD and putting together a SERIOUS gaming machine, that is if you know how to put one together, I have one waiting to get purchased on amazon, it has 4gb ddr, a gtx 470, and an AMD 965 black edition for under 1000 dollars that'll play ANY game you throw at it.