I'm trying to get a spellcheck (without using word) for a RichTextBox. I've tried to use the RichTextBox.GetSpellingError Method at http://msdn.microsoft.com/en-us/library/system.windows.controls.richtextbox.getspellingerror.aspx, but I don't understand how to use it. Can somebody help me?

EDIT: Oh yeah, I'm using VB Express 2008 with the .NET Framework 3.5, if that matters. And, I don't want to use Microsoft Word's SpellCheck thing because some of my users might not have MS Word.

Is there a way I can use some external application, if need be, like a spell checking application?