4gb
I read somewhere that having 4gb of RAM is beneficial in Vista, whereas a bit pointless in xp.
32-bit versions of Windows Vista Home Basic, Home Premium, Business, Enterprise, and Ultimate: 4GB
32-bit Windows Vista Starter: 1GB
64-bit versions of Windows Vista Home Basic: 8GB
64-bit versions of Windows Vista Home Premium: 16GB
64-bit versions of Windows Vista Business, Enterprise, and Ultimate: 128GB
cheers for this guys.
my (cracked) copy should be here tomorrow so hopefully all is well with it