"Beginning with Vista and continuing in Windows 7, new security measures were
introduced that required additional steps for running certain types of
programs or operations. For example, elevated administrator credentials are
required for anything that affects system settings. This higher security
setting is commonly referred to as "running as administrator or with
elevated privileges"" However quite often Windows 7 confuses users by
saying that these operations requires administrator privileges even when the
user is using an account seemingly with those privileges. In this article our
Tips Editor Vic explains the reason why and tells what you can do to overcome
the problem.
http://www.techsupportalert.com/content/three-tips-running-programs-administrator-windows-7.htm