characters in emacs

How do you change characters in emacs? for example, I would like my files to appear written in "Arial" or "Thaoma"..

Hello,

I am not sure but maybe these links tell what you are looking for:
Link 1
Link 2
Link 3
Link 4

I guess Links 1 and 4 should it for you.
Please tell if something more is required.

Regards,
HKansal