Temporary user rights

From: Aaron N. Cutshall (acutshall@elsallc.com)
Date: 05/09/02 

From: "Aaron N. Cutshall" <acutshall@elsallc.com>
Date: Thu, 9 May 2002 15:07:17 -0500

I would like to temporarily change a user's rights to allow a user to update
the system time on the local workstation to match the server, then remove
the privilege to prevent tampering. This would normally be executed during
the user's login script. How can I execute something with temporary
administrative privileges?