Here's what I'd like to do:

I have a Mac Mini, a wireless router, and a Thinkpad T23 running the latest version of Ubuntu. I figured out how to video out through the S-Video on the Thinkpad in Ubuntu. What I want to do is send the whats on the Mac Mini screen through the Thinkpad to the TV. But at a speed suitable for video.
(I tried XVNCViewer)

I appreciate any help you can offer.
Sorry if this is the wrong forum to post it under, but it is a mix of different things.