Rich Text Printing

I've just bought 'Visual Basic .Net Step-By-Step' in the hope that among other things, it could tell me how to print the contents of a Rich Text box. It does, but it doesn't because the Rich Text box I have has different font styles (bold, italics) etc, and the example given around and about page 474 cover only plain text in a Rich Text Box.

Does anybody know of a good example of printing from a Rich Text Box please?