google registry entries of software never installed

I have google, google chrome, chromium, google earth and google picassa entries in registry. I have never installed any of these. I tried deleting them but the "TrustedInstaller" wouldn't let me. I need permission from it to delete the registry entries.

How do I do that?

Please refrain from giving me newbie advice like "don't mess with the registry". Only respond if you know how to bypass the "TrustedInstaller" and get rid of google entries.

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