Sleep option disabled in powercfg.cpl

So I can't change the sleep option for AC. The Power Configuration will not let me change the value. The field, which is set to 'Never', is greyed out. There is a warning that basically tells me to check the Group Policy settings.

• Note 1:
  I can change all other power configuration options apart from this one
• Note 2:
  This happens on all 4 Windows 7 machines in my network (private home)
• Note 3:
  I run SBS 2003 and have a domain. I am pretty sure that there is no Group Policy that can be set to prevent a user from changing the sleep value. I have looked and none of the policies are even close. All polices that have anything to do with power configuration are undefined.
• Note 4:
  I have checked the group policy settings on the computers and no, I can't find a policy that would prevent anyone from changing the sleep timer.
• Note 5:
  Yes, of course I have admin rights on the computer.

Please, please, help. This is driving me absolutely bananaz!!

Have you tried creating your own power plan?

Thanks, but yes. It is still disabled.