Multiple Cl***** in ActiveX DLL

I've got a 3rd party dll which contains multiple cl*****.  In VB, I have 
access to all of the cl*****.  Now, in ASP, when I go to createobject, the

ProgID is only available for one class.  I've looked in the registry and 
this is the only class within the dll with a ProgID.  How can I access the

other cl***** in ASP without using the ProgID?  Any information you can 
provide would be helpful.