How to display legal notice on start-up

This is an awesome hacking trick that will help you to instruct your friends when they log in on your computer without your knowledge.
You can tell them the do's and dont's of using your Personal Computer.
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Example:
Caption: Hey guys. Welcome to my PC.
Title: before using my PC, i want you to know the do's and dont's for it. They are:(Depends on what u write)
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Now, to do this trick you'll have to do the following steps and they are:
1)Go to the start menu > Run
2)Type "Regedit"(without quotes)
3)In the registry, search for HKEY_LOCAL_MACHINE
4)Under this option, search for SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system
5)Click on system and then you'll see some files on the right hand side.
6)On the Right hand side,double-click on "legalnoticecaption" to write the caption of your notice.
7)Write the caption of your notice and click ok
8)Now below the caption, you'll find another file "legalnoticetext"
9)Double-click on it and write the text for your legal notice and click ok.

That's it! Now everyone will know what terms and conditions to follow when they log on to your PC.