I have to provide a solution for this scenario:
Single workstation running Windows Vista HP. No domain. The owner wants to be the "Main" administrator of the computer. The idea is to have a Standard account and an Administrator account. Everyone who uses the computer will work under the Standard account. Only the Manager and the Owner have the password to the Administrator account. Now, the Owner wants another Administrator account where he only knows the password. I told him the problem is that any administrator can change or delete the password of another administrator. It is my guess that the main issue here would be preventing any other account from changing or deleting the password of a "Main" administrator account. The only use for having the Managers Administrator account is to perform some duties such as installing printers and programs.
I am looking for a solution to this problem. I prefer to handle this all through Windows although I am willing to look at third party software as a possible option.