The Tech Bulletin is saying the exact thing that Nothinman is, using slightly different language. There is nothing inherent in the way the registry works that requires a reboot or log-in cycle for changes to become effective. You can simply take my word for that, as a Windows programmer with 20 years of experience. The tech. bulletin is referring to administrative changes made to the registry, which require some other program to be stopped/started in order to pick those changes up. Anything writtent to the registry is immediately available to any program that queries the affected key, however many programs do this only at startup, so even if you change a registry value the program won't pick that change up until it is restarted. This scenario isn't relevant in discussions of installers, or at least would be rarely relevant.
