Here's an update: Using TightVNC Server and View works great at letting multiple people connect to one computer, all at the same time.

However, my colleagues (on a LAN) are complaining that it doesn't refresh enough. They will use a program (like Excel even) and scroll around or make changes, and not see it on the screen. Sometimes they'll open up a program and just see the outline of the window, but none of the content.

As a result, they end up just logging in with GoToMyPC or LogMeIn, which both work great but only one person can use at a time.

Anyone have a solution to this? Is there a better viewer? Or a different flavor of VNC that will allow multiple simultaneous connections?