TextBlock wrapping of text in Silverlight XAML file.

I have a wierd and annoying problem.  I have a textblock that is inside a stackpanel that is Oriented horizontal.  It would be nice if I could have the textblock appear in multiple lines nicely wrapped.  How could I do that?

Hi,

I'm not sure I understand your requirements completely. Are you able to attach a screenshot that would show us what you are trying to achieve. With this information, I can provide a possible answer to your needs.