Way back in
this post (2008), lazer linked to a tool call AutoDiagrammer which does a great job of showing the structure of classes within a .dll. That tool was later updated to AutoDiagrammer II. I find it a little easier than the VS object explorer. The code is on
CodeProject, but it's out of date and requires a few changes to build today. I'm attaching a compiled version in case anyone is interested in using it to explore the CamBam dlls.