Infopath in MDI

[DLS]

I have a MDI form that opens many vb.net windows forms. I would like to have
the menu open infopath forms. Is there a code sample or suggestion how to
open InfoPath forms in a windows MDI form for data entry? Do we need to
install license InfoPath on each client machine? I'm not interested in
clients developing forms, only filling them out. We are using Office 2003
professional.

Thanks.

Dan