Using the vTable of an ActiveX DLL with Known Interface and Unknown GUID

[RichB]

All, I'm looking to build a plug in architecture where individuals can create VB ActiveX DLLs to be used by my application. I have seen this done with products like ViewStar. The catch is, to maximize performance, I'd like to be able to use the vTable of the ActiveX DLL. So, I'd like to have the following: The VB ActiveX DLL would have a specific interface. For example, the following Methods: Function ApplicationStart(...) Function ApplicationClose(...) How do I call the methods via the vTable from my Visual C++ application? I would appreciate any help. Thanks, Rich