I'm running IIS6, and I am having problems. In the Application Event Log I am getting:
A. The above messages are "unusual". They indicate that your installation and running login does not have permission to access crucial areas of the registry.
Make sure you are logged in as Administrator first. Then if the install still fails, using regedt32.exe,
make sure the registry areas in question in
have full permissions for Everyone, and try installing again.