Windows security !!

Hi,

Can you please tell me how to remove search, setting and programs from the start menu on window2000 professional workstation? Also how do I dissallow end user from double clicking my computer to access the local drive information. The end users will only be allowed to run the applications by executing the shortcut on the desktop. Can all these be done on the server by editing the policy editor or do I have to change the registry on the workstation? Please help!!

Regards,
Edmond