open projector in fullscreen and keep on top?

I have read several posts where people discuss TOPMOST and SWF Studio as options for keeping applications running in the top of the z order.

My question is: Is there a way to create a projector that always stays on top (e.g. even if a windows update occurs) without purchasing SWF Studio? As I understand TOPMOST is only for launched applications, not for the application itself.

SWF Studio looks like a great program but I'm afraid right now this is all I am trying to do.

Thanks in advance,
erik

I believe MDM Zinc has that feature. It's free for non-commercial use, you just have to put up with a Zinc splash screen right before your file is loaded