If Vista is giving you trouble, as it gave me, then hopefully this'll help.
To be more specific, I wasn't able to change the font on my Kiwimeter. after searching and asking on many boards and chans someone on here stated that they only use True Type font. The font I had was Open Type.
I had heard you could simply change the extension and get the desired result, but Vista wouldn't let me do that. So I got a font changer from [s]obscured[/s]...
Link removed. No links to illegal software please.Sorry :(
with this you can change the font from Open to true type and vice versa. i'm sure you can do some other things, but I employed it for the sole purpose of converting Open Type to True Type.
There is fontforge, available through Sourceforge. It is free, but for windows users there is a catch: You must install cygwin, or us a Linux distro.
I use this software with cygwin, and works like a charm, even in vista, but for newbies, it is not for the faint of heart, but I will still suggest it.