Block installation of software

SAI RAM to all
I am running my Cyber Cafe can someone provide me the software so that anybody who sit on computer can not install any software must for IDM
waiting for reply
Thanks
SAI RAM Joginder
@yahoo.com
Answer #1
Use group policy:
http://www.howtogeek.com/howto/8739/restrict-users-to-run-only-specified-programs-in-windows-7/