I'm not exactly sure what you want to do. If you just want to handle touch input in Windows 8 then take a look at this: http://msdn.microsoft.com/en-us/library/windows/apps/xaml/hh... .

If you want to simulate touches programatically then take a look at this api: http://msdn.microsoft.com/en-us/library/windows/desktop/hh80...

Edit: I don't think you'll need to write a driver either way.