If you do not want the Add and Remove Program feature in the control panel then you can disable it trough this Registry

If you do not want the current user of the computer to be able to add printers for whatever reason you can think

When you put a disc, usb or any other removable device into your computer you always get a popup asking you what to

Using this option you can remove the shut down button from within the start menu. We havent had the chance to test this