Someone has made packages available for Map Tools so that you can use it to run 3:16 games online:

http://renatoram.wordpress.com/2008/08/28/maptool-package-for-threesixteen/
http://renatoram.wordpress.com/2008/08/29/threesixteen-maptool-package-redux-higher-ranking-officers/

Personally I think that's really, really cool. Now to round up some troopers;)

- Neil.