Restrict Hardware Changes

This trick removes hardware tab from applicable items in Control Panel & from local drive properties
Valid for Windows XP/2000 only

Click start button & click run
type "Regedit" in run box & press OK
Registry editor will show up in windows explorer fashion
left section will show location of regitry entries
right section will show contents of current registry entry

For current user
in left section go to following place
HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurre ntVersionPoliciesExplorer

in right section right click & create new or modify existing DWord value called "NoHardwareTab"
value=0 show hardware tab
value=1 hide hardware tab

thanks reena to sharing such information