First of all create a new Text Document. Then write "CMD" in it, without the quotes and then save it as "anything.bat". (Make sure you're file is .bat)
Now go to the location where you saved the batch, and run it. If you've done it correctly, you'll see that CMD (Command Prompt) will open.
Now, write in the CMD: "cd\windows" without the quotes. (This will change the directory to WINDOWS). Then type "regedit" without the quotes and regedit editor should open.
Now navigate to:
HKEY_CURRENT_USER>Appevents>software>classes>microsoft>windows>current version>internet settings>policies>system
Then on the right pane where it says "Disable Taskmanager", right click on it and scroll down to modify, then change the value of it to "0". Then open Task Manager (CTRL+ALT+DELETE or CTRL+SHIFT+ESCAPE) and disable the Internet Cafe's timer.
If you did this right, you're done.
Well done and good luck doing this.