Ya can normaly find me at the gamez section, but now I need help of tha font masters

I've completed my isometric engine (Can't show current version, it's not yet uploaded)

Well anywayz... I wanna make a full RPG with this engine, and offcourse I want to use my own font...

Now I was wondering if I could use a *.ttf wich my m8 made...
There are a few thing I need to know if it is possible:
- How can I add it?
- Does the user has to download the whole font to read it?
- That's all for now