Hi shayne, see here for a script you can paste as the command part of a shortcut key for doing a hide/unhide of the grid:
http://moi3d.com/forum/index.php?webtag=MOI&msg=4954.2

> I forget but what is a good screen video capture program

I use Camtasia: http://www.techsmith.com/camtasia.html

- Michael