Below is one way to broadcast the slides in real time using VNC. It assumes that the presentation is delivered from a laptop running Windows XP (see below on how to do this on a Mac). One also needs a Linux box on the UTCS network as "a proxy".
On the UTCS Linux box:
In the conference room:
To do this on a Mac, running Mac OS X, follow Misha's instructions above, except that the 2nd, 3rd, and 4th bullet from the "In the conference room" section above are replaced by the following bullets: