CrossLoop

Taken from: http://www.crossloop.com

What is CrossLoop?

"CrossLoop is a FREE secure screen sharing utility designed for people of all technical skill levels. CrossLoop extends the boundaries of VNC’s traditional screen sharing by enabling non-technical users to get connected from anywhere on the Internet in seconds without changing any firewall or router settings. It only takes a few minutes to setup and no signup is required."

Mr. B. and Mr. M. use it. The most helpful software ever.