The various fonts are called " Webdings, Wingdings, Wingdings2 and Wingdings3 "
Basically you'll use IIF or SWITCH to set your desired shape, you'll need to use capital letters, small letter or numbers.
The list of the shapes and the corespondent key could be found here http://www.purplehell.com/riddletools/wingdingschart.htm
P.S. Use IE to view that page, firefox doesn't display that font correctly!!
Hope that helps someone.....