Why?? my screen is small and my mice has 1300 dpi (not a gamer mice, but also not too bad) . Don`t need more. I doubt that pc applications are ready for touchscreens. Even my android mobile isn`t it really.
For example, I would like a virtual keyboard that automatically pops up when needed, like what happens on a tablet.
google for it . microsoft has a screen keyboard too. b.t.w
I do rember that dos had programs to enable mice support on keyboard applications.
There are sure applications for touch support lying hiden int the net , but i personally wouldn`t trust it.
To have an application told where is a input entry for showing a keyboard then looks like a virus/spyder worm for me ( these programs have often funny requirements as network connections). Was at least the case the case for nearly all better commercial android keyboards. So check the Terms of use. litlle warning, but i feel like i have to write it.
regards bluedxca93