No Admin rights to registry keys

[Guest]

When trying to install a software the install fails and says that I don't
have permission to access certain registry keys. I'm logged on to Windows XP
SP2 as the "Administrator" so how can the administrator not have
rights/permissions? As the admin I tried to add rights to the registry keys
that fails the software install but it tells me that I don't have the rights
to add permissions. How can this be? If the admin doesn't have the rights
then who does?

 

[Wowbagger]

While logged in as Administrator retake ownership of the keys using regedit.