Oh, man, finding registry info was like the Search for the Holy Grail (Monty Python style).
At one time I worked for MS, and was fortunate to stumble on some good tools for it (like an OLE browser, which is originally what the registry was designed for-it was actually called the OLE Registration Database on Win 3.1), and I acquired every resource kit I could find, and pored over them.
Knowing how to sift through the results, and read the good answers for key elements, is a skill. One that you improve with experience.