Can't remove entries in the registry

Hi,

I've been troubleshooting my McAfee install and need to
remove all references to it in the registry. I've been
able to remove most of the offending entries, but have not
been able to remove all of them.

The error message I get is "Unable to delete all specified
values". My user account is administrator, but have tried
logging on with the "administrator" account. I even tried
it in safe mode and continue to get the same error.

Any ideas out there?