Loading Server Control as String

Hey all,
 
I have a template page that has various pieces set via. .InnerHmtl = str;
the str's are stored in a database based upon what option the user chooses during registration.
 I wanted to become more advanced and also store a custom user control if so selected by the user.  As an example (these are the string values that would be stored in a DB):
Plain Html Str: "<p>This is my registration text.  <b>Hello</b></p>" (set by a rich text WSYWIG editor component in the registration page).
Custom Control: "<cc1:CustomNewsControl id=\"cnc1\" runat=\"server\"  NewsFormat=\"Long\" />" (e.g.)
 
When I set .InnerHtml in PageLoad the control gets written but not resolved... I had overlooked the processing sequence for converting controls into HTML.  
 
how can I overcome this and have the custom control disp ...