Exporting Class methods to a DLL

Having looked at petzolds book and the msdn section on DLLs, I still cannot figure out the proper way on exporting methods. I know that you include __declspec(dllexport) after "class" but before the class name, however, do I need to do the same when I define my functions individually?

for various reasons that are explained in chapter 1 of any COM book, I don't ever export classes. What I usually do is create an exported C function:

IStandard *GetNewObject(char *name, int version);

where IStandard is a class with only pure virtual functions

AddRef()
ReleaseRef()
QueryInterface()

QueryInterface returns a pointer to a particular base class with more specific methods.

This probably makes no sense to you but hey, that's what I do anyway.

any good COM books out their to read?