How can you change the desktop wallpaper on a computer where the administration has disallowed it?

I want to figure out how to change the desktop background on the computers at school just because i want to see if it's possible to crack the system where they have disabled access to changing the background.How can you change the desktop wallpaper on a computer where the administration has disallowed it?
open up the picture you want to set as a wallpaper with the Windows Picture and Fax Viewer. Right click on it and select %26quot;Set as desktop background%26quot;How can you change the desktop wallpaper on a computer where the administration has disallowed it?
you have to be an administrator rights to change it.. that is the only way to do it...How can you change the desktop wallpaper on a computer where the administration has disallowed it?
simple ask premissionHow can you change the desktop wallpaper on a computer where the administration has disallowed it?
1st crack the system,then if you still have time be4 they kick your S,change the w/paper.

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