Mail Merge Type in VB.NET 2005

Hello Friends,


I want to write a prg., which will have a Rich Text Box. User can enter & format text. Can be saved in a RFT file. I know all that stuff. My point is, user will open a rtf file, select customers to send the letter to. I got to merge the letter and the addressed of the customers and the user can print Page wise. Can I save it in a new rtf or doc file? I want similar output as we do in Word.

Is this kind of application possible! If I let this application make from some one, how much should it cost (Just to make my work easy, want to know)?

I want to make it, how do I make it. Any guidlines, reference, help is highly appreciative.

Thanks

Trupti