Vlad Simionescu was kind enough to share a version of the TinyBHO sample he adapted to compile on Visual Studio 6. There’s a couple of changes in the threading model he had to make, that I don’t understand well enough to intelligently comment on, but they seem harmless. It also pops up the URL of the document now, to demonstrate the use of BSTR’s, and some simple DOM access. Thanks for that Vlad!
Pete Warden's blog 