HTML Hell

I'm creating a html tag and would like it to colour the <a> part og html text in a text box each time the user presses enter, (just like vb), but cannot get it to work. Do i have to get it to find a '<' and then a '>' and then colour that and the code inbetween ??

Refer to this thread: http://forums.vb-world.net/showthrea...threadid=22167

And if you would like more on tags, go to http://www.planet-source-code.com and type in Richtextbox.