I've noticed that the only devices receiving updates are the ones listed for compatibility with the windows 8 upgrade on Gateway's site.
My device is the ZX4951-33e (which isn't even specifically listed in their support section). Looking through for the devices they listed, there are windows 8 drivers, but nothing touch-related. The solution posted earlier granted me single touch, though
there is a non responsive margin of about 1'' on any side of the screen.
My model uses the IdeaCom IDC 6650 as its touch controller. The vendor's website is http://www.ideacom.com.tw/en_home.htm, but they only have drivers for two of their devices. I think I might shoot them a
message. I'm not exactly hopeful of a free/any solution that way, but it seems like most other routes have been exhausted.