change speech font (SOLVED)

[dulcias]

Hello.
I just came to know AGS and I like it, but I'm from Portugal and I use some caracters you don't. (^~`', etc.)

So, I went to the manual and imported a TTF file. So far so good. Now I know I have to use setspeechfont (n) to make it work. My question is:
Where do I do that? I don't know very much of scripting and I'm just begining so please try to explain as if to a 6 year old, step by step.

Thank you.

OK When I wrote this I hadn't noticed the search option. Someone else had the same problem. Sorry.