Getting laptop with no OS, which to install?

[Tobeornottobe]

hello all,

Just ordered following laptop;
Znote 6224W
Zepto Zpro 300Mbit Wifi Card (ABGN) (260027)
No OS (200200)
Keyboard Znote 6x14W Black UK (170078)
14,1" WXGA+ 1440x900 - 6224W (100302)
NVIDIA® Geforce 8600M GT (800104)
Online discount UK 1 (901305)
2.00 GHz Intel® Core™2 Duo T7250 800MHz 2MB (120629)
160GB 7200rpm SATA Harddisk Samsung® (140035)
6 Cell Battery (250324)
4 GB (2x2GB) DDR2 PC5300 Original Zepto (130133)
SAMSUNG DVD-RW Slot-in 6xx4W/6xx5WD/2xx5 (150124)

I will be using it for gaming and light business use and would appreciate advice which OS to buy and install, Vista 32 bit, Vista 64 bit or XP? I have no experience of Vista and don't want to find that a lot of my older games will not work in Vista environment.

tks in advance

 

[Tobeornottobe]

So three votes for Vista 64, two for XP. I wont be getting my hands on this laptop until beginning of next month, so a bit more time for interweb research before I decide to fork out the wonga.

Burnsy, the video RAM is 512 mb dedicated.