Detecting wordwrap and padding accordingly? (RichTextbox?)

Question

Heya,

I'm trying to format a chat field something like this:

  12. july, 2010

    12:40 Hi, are you there now?

    12:46 Cool, cya tonight :-) What do you want me to bring?

    01:16 Sure thing, it's all packed and ready!

Looks pretty fine and is easy to do. Now, my problem is if the text is too long (or the window too small), it could look like this:

  12. july, 2010

    12:40 Hi, are you there now?

    12:46 Cool, cya tonight :-) What do you want me to 

bring?

    01:04 No, i cannot bring the alligator, it is just 

too dangerous - it would probably kill us all before we 

even got the party started! ;-)

That's exactly my problem (not the alligator, the word wrap!). I'd like it to wrap like this:

  12. july, 2010

    12:40 Hi, are you there now?

    12:46 Cool, cya tonight :-) What do you want me to 

          bring?

    01:04 No, i cannot bring the alligator, it is just 

          too dangerous - it would probably kill us all 

          before we even got the party started! ;-)

How would i do that? Using a RichTextbox, or something else?

Thanks for any help - this is the last piece of my apps puzzle that needs to be solved :-)

// Yoc.