Vista Ultimate 64.
Can't run firefox.exe, no response.
Delete - "You need permission to perform this action."
Properties-Security-Advanced-Owner: Current owner: Unable to display current owner.
Attempt to change owner: "Unable to set new owner on firefox.exe. Access is denied."
Run as admin: "Windows cannot access the specificied device, path, or file. You may not have the appropriate permissions to access the item."
Can't reinstall into that directory.
How can I get control of the file so I can reinstall?