Html and dynamics txt :tags in txt files?

Hello everybody !
I tried to make my dynamic text an hmtl text but it only works if i do this [AS]loadText = new loadVars();
loadText.load(“infos.txt”);
loadText.onLoad = function() {
contenu.text = this.contenu;
infoperso.text = this.infoperso;
infoperso = infoperso.htmlText="<a href=‘mailto:[email protected]’>[email protected]</a>."
};[/AS]
this is working good but what do i have to do i want a large piece of text with bold or colored characters. I tried to put the html tags in my text file but when the file is loaded it shows the html tags.
I’ve read some similar threads but don’t understand it very well, can someone help me with it?
Thanks
Ubik
edit a bug? it changed the color of my txt alone