Traktor FS 1.1 displays it's resolution to a maximum of 800x600 native to the resolution that your monitor can display. This means, that it will not stretch the resolution of 800x600 to fit a 1600x1200 size CRT/LCD screen. 800x600 is just a portion of 1600x1200. So this why you only see the screen in the middle very small.

In order to display it larger, your CRT/LCD or laptop must have the ability to enable what is generally called "Stretch" mode. This will allow the display to stretch any non-native resolutions to fit the entire size of the screen.

Most Toshiba, IBM, and Sony laptops have this option available within the BIOS setup of the laptops. Please contact your computer or monitor manufacture for more information on how to enable this feature.