I have a Windows 2000 Pro computer in which I have to give the users Power User access on the local machine to be able to run a program. How can I keep the users from being able to install any type of program while being in the Power Users group on the local machine. The program requires them to be in the Power Users group and will not run if they are in the Users Group on the local machine. I keeps giving an error. I could upgrade the software but it is an expense we are trying to avoid.