User privileges

[Razamastazhe]

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I am trying to set up a small internet cafe with 3 PCs.
I want to make them secure and ensure that the users don't have full rights on the PC they are working on. For example, they shouldn't be able to start Task Manager, access the D: drive, or install or remove programs.
How do I configure these PCs appropriately for a cafe like this? Are there tools to make the configuration easier?

[techsuppunli]

use group policy..

[dash2012]

enable Guest Account!