How do you change fonts?

I just got Object Desktop yesterday so I'm new to this too. It looks like you have to edit the skin itself which can only be done with the skin editor that comes with object desktop. It's kind of a trial and error thing so far but it's a lot of fun to learn.

OK, here's the truth . . . I have most of it figured out but haven't got desktop icon caption size figured just yet. Can't get the font size I want for the icons set permanently in the skin. I've got all my other fonts sized, saved and applied.