>One of the other guys here created a COM server using VC++, it's registered on my machine. When I try to instantiate it I get the error:
>
>OLE Error code 0x80004002. No such interface supported.
>
>Any ideas about what kind of interface it's looking for?

Lots of possibilities; my first instinct would be to shut off dual interface support to force VFP to to use IUnknown to explore the interface. What flavor ofVC++ COM implementation was used? I've got more than passing familiarity with ATL implementation...

You can explore the COM component in detail using OLE View; it should show you all the interface definitions if you view the server's embedded TLB details.