Converting HMTL in a textbox

I have a richtextbox and basically it obtains an AIM profile however the AIM profile is in HTML so everything in the textbox is written in HTML. I can make it search the TextBox for "<" and ">" and edit that out so it's just the font however, I want it to actually apply the HTML function so if it says red font, I want it to be red, bold font, etc, etc.

The old Richtext box control is very limited. It doesn't support the entire RTF format.

Sounds like you need to roll your own html to RTF translator engine.
(At least as far as the content you are loading.)

On the other hand if you only need to display the content you could use the IE web control instead.