I've been searching high and low for these drivers
, ASUS' driver
installers for Vista64 don't recognise Windows 7, and it seems they use the same installer for XP and Vista32.
My monitor is being forced to 59Hertz and thus not allowing games to enable vertical sync.
I have all the latest nVidia drivers (185.85 W7x64 / 9600GT), and all my m/board and chipset drivers are x64 and up to date.