Adding CrystalRuntimeViewer to ASP.net page at runtime

This is a question
about CrystalReportViewer control that is in Visual Studio .NET. All
documentation I have read says to use the control and drag and drop it onto the
asp.net webpage. Making this website I want to be able to add the Crystal
control to an object on the webpage on the fly during runtime. How can this be
done? Server side vb.net approach is what I am looking for but solutions in
javascript will also work. I would also like to know exactly what is going on
in the background when the Crystal control is being dragged and dropped on to
the webpage at design time? I understand some assemblies are being added but
where? I am able to add crystal viewer control on the fly in forms with success
but not in asp.net. Thanks in advance for your help.