I don't mean the resolution i.e., changing from 800x600 to 640x480, but my question is to change the height of each and every window which had been already openend up and as well as all the windows which you will open after my app is already started..

For e.g., if you had seen the "Cheecoo bar" (which can be downloaded from http://www.cheecoo.com), is an exe file which must be installed on the comp. Once you start the program it first adjusts the screen height, and then the cheecoo bar is shown in that area.

Please do help me by solving this problem.

Regards,
Eswar.