The info in the article on Webdings is certainly worth reading.

The list of Win XP fonts may be misleading. It includes international fonts that may be installed only when you select an associated language, perhaps when you install XP or perhaps if you change your language preference in XP's Regional and Language Options. (It's not something I'm willing to test right now.

I'm sure there's someone around here who knows more about it than I do. Here's a link to a list that has a bit more explanation:
http://home.classicnet.net/jimdan/Wi...butedFonts.htm