Powercfg for Windows XP machine

I created a job through software delivery is call powerxp.cmd

POWERCFG /CREATE CustomScheme
POWERCFG /CHANGE CustomScheme /monitor-timeout-ac 15
POWERCFG /CHANGE CustomScheme /monitor-timeout-dc 10
POWERCFG /CHANGE CustomScheme /disk-timeout-ac 0
POWERCFG /CHANGE CustomScheme /disk-timeout-dc 0
POWERCFG /CHANGE CustomScheme /standby-timeout-ac 0
POWERCFG /CHANGE CustomScheme /standby-timeout-dc 0
POWERCFG /CHANGE CustomScheme /hibernate-timeout-ac 0
POWERCFG /CHANGE CustomScheme /hibernate-timeout-dc 0
POWERCFG /SETACTIVE CustomScheme

basically I need all the machines turn off hard disks: Never

                                 System standby: Never

                                 System hibernate: Never.

when I send this job to the machine  with user who had admin right, then it was success,

but if I send this job to the regular user then this job never run, even when I click update configuration, this job show succsss, but the setting on the machine still how Turn off hard disks: 15 minites

                          System standby: 30 minites

                          System hibernates: after 15 minites.

when I check registry in  hkey_user\control panel\Powercfg\PowerPolices\315\  name showing CustomScheme

How can I make this run for regular user?

Your help will be great appreciated it

Lillian