Question : What else is required to allow user to set clock in Windows 7, local administrator is already granted.

A program used in my organization requires the user to have the ability to update the system clock.  I have already setup the user as a local administrator which used to allow the permission required in XP (power user also), but in Windows 7 this is not the case.  

What directory does the user need to have full permission on to set the clock?  Or what else is required to allow a program to update the system clock in Windows 7?  

Answer : What else is required to allow user to set clock in Windows 7, local administrator is already granted.

Gotcha, XP do not use User Account Control (UAC), so you need to force the program to run as an Admin.  Test this, if you right-click and do a 'Run-As Adminstrator', is it able to change the clock then?  If so, your solution would be to shim the application by going to the Compatibility Tab in Properties of the EXE and check 'always run as administrator', the other fix is to use a Manifest file.  You can research about using a Manifest file from Microsoft's website or Bing or Google.  Good Luck.  

P.S. - Shim fixes one local PC.  For an enterprise, you will need to install the Shim database and deploy a local shim file to all PC's.  You can find out more about it on Microsoft's website.