how do I change the display resolution of an input video signal

Hello!! This is what happens.

I have a multimedia presentation, done with macromedia, and in the presentation there are some video clips that are in a small size next to the pictures and words of that slide, but each time a video clip starts the projector automatically switches to full screen of the video clip even when the screen on the CPU is not!!!!

I do not want the projector to go automatically into this full screen size of the videoclip!!!! because it does not show the entire presentation!!!!

 

Please help!! How can I tell the projecto to present the exact signal from the CPU insted of going to full size screen each time a video clip is shown.

 

This happens even when I open the microsoft media player!! Goes to fullscreen of the video signal!!!

 

Thanks!!!