Flash Projector problems in windows vista - please urgent help

I’ m really desperate on this one.
I have a flash projector in full screen, done in flash 9 with as3, i published in flash player 9.0115, in my projector i open html pages on the top. My problem is when i run the projector on windows Vista and i open an html page, when i close the browser, and return to my projector i loose the full screen

Can someone help please