Scenario: My touch screen is not working correct because if i press touch screen the mouse will jump across the screen.

The touch screen needs to be calibrated depending on what you have installed you might have eGalaxy Touch or TouchKit.

For eGalaxy Touch go to Start - All Programs - eGalaxy Touch  - Configure Utility - Tools - select 4 Points Caliberation

For TouchKit go to Start - All Programs - TouchKit - Configure Utility - select Calibration.

After calibrating touch screen should work properly.