Another Deleting Files Problem...

> I'm having difficulty with permissions to delete files (in particular,
> files
> in C: and C:/Program Files). I am the sole account on the computer, and
> am
> an Administrator with User Account Control off (at least, until I get
> this
> issue resolved).
>
> When I right click on C: (or any folder in Explorer, really) and click
> Properties -> Security, I'm unable to apply changes to any
> administrator
> permissions. I get two pop-up messages: "An error occurred while
> applying
> security information to: [name of folder]. Access is denied.", and
> "Unable to
> save permission changes on [name of folder]. Access is denied." One is
> a
> generic Windows error, and the other is a Security Error.
>
> Help!