Vista cursor jumps on Screen

Seriously - I am really crying. The cursor on my laptop DELL Inspiron 1545 using Vista - cursor jumps everywhere when typing. I AM NOT TOUCHING THE TOUCHPAD! I have searched for solutions but there is no one obvious clear one given I am a teacher try to prepare work and the problem is getting worse and worse. I really am crying with the frustration of it. Please please tell me how to stop it happening.:crybaby:

It happens sometimes with the wrong touch of touch pad. In such type of issue, you need to install the touch pad secure software. At-least try to install it once and if not getting any solution then you need to look at these locations : How to control cursor ........