Loading controls at runtime

[J055]

Hi

I'm loading a user control at runtime like this:

ASP.AccountFinder accountFinder =
(ASP.AccountFinder)LoadControl("~/Controls/AccountFinder.ascx");

This works fine in the VS development environment but when I attempt to
compile by using the Publish Website option I get the following error:

The type or namespace name 'AccountFinder' does not exist in the namespace
'ASP' (are you missing an assembly reference?)

What do I need to do to make this work in a precompiled application?

Thanks
Andrew