1. If need the pinch zoom function have to remove the EETI(eGalaxy) touch driver.
2. If use the pinch zoom function can't support simulated mouse function.
3. If want to calibrate the touch under Windows 7 can follow below :
a. Click Start and then Control Panel, and next Hardware and Sound.
b. Under Tablet PC Settings, tap Calibrate the screen for pen or touch input.
c. On the Display tab, under Display options, tap Calibrate and then Yes to allow the program to make changes.
d. Follow the on-screen instructions to calibrate your touch screen.