I just discovered this tutorial: http://cleversomeday.wordpress.com/2...nkscape-dings/ that provides a template SVG to create a dingbat SVG font. Combined with this online converter: http://onlinefontconverter.com/ you can then turn it into a ttf, otf, or some other font usable by your system.

I tried it and it works quite well. Here is a screenshot of wordpad showing a ttf with four glyphs I doodled following the tutorial document.
2010-02-10_105455.jpg

-Rob A>