Screen saver on Web Server 2008

The company I work for will be participating in a trade show where we will be displaying our software. Pretty straight forward, but here comes a catch. I was tasked with getting a powerpoint presentation to be displayed as a screen saver.

In Web Server 2008 (the OS of our product) the only option I can come up with is to create an animated gif/jpeg and replace the windows logo with that.

The options I am given in Web Server 2008 for the screen saver by default are:
Blank
None
Windows Logo

This server is only going to be used for display purposes (and will never be on our domain/subnet), so I don’t have anything against installing shareware to get this done. If you have any ideas, I would love to hear them.
thx