Run VS assembly using VSA

Hi,

I would like to compile a dll in Visual Studio and have it run using the VSA
runtime wrapper class.

I've tried to load an assembly using VSA runtime engine but I get an
exception stating that the _Startup class cannot be found.

I've examined a working VSA assembly which contains (amongst others) a class
called _Startup. Also the project file (.vsaproj) for the assembly isn't a
compatible Visual Studio project file.

Can this be done or is it better to pursue a solution based upon loading
late bound assemblies at runtime and executing them?

Thanks
Peter