Windows Updater(is this ok)

Hiya folks im just wondering if it would be ok to change Windows Updater Applications in Defence+ from the policy Installer or Updater to a Custom policy?Just i only update XP SP2 once a month and could allways change it back when any new updates are installed.If anyone has any suggestions i would like to hear them/Has anyone running XP sp2 changed the policy for Windows Updater Applications in either D+(Computer Security Policy) or the Firewall(Network Security Policy).

Nice 1 Matty