Calling a user control dynamically.

Question

Hello,
I need to know how to access the user controls dynamically.
There is a drop down list with the name of the forms. If the user selects a form and hits submit some user controls should be displayed based on the selected form.

There is a table which contains the Form Name. name of user control and the order in which they should appear. Based on this table can i call the user controls and place them in the screen. Please let know how this can be done?

Thanks
Sowmya