How to add arial fonts (or a pretty similar) to a TeXmacs document?

Hi All,

I'm trying to write my own TeXmacs style for getting as close as I can
to an article style (I ask for help to both the dev and user lists this
week without any answer) and now I want to use the arial font family as
a font for all the article. There is any way to do this or any pointer
to documentation (by the way the Styles documentation is a lot better now).

Cheers,

Offray