Want to know "How can u hide all opened windows in win XP with a keyboard shortcut".

But why to hide opened Windows?
The answer is quite simple as one may want to hide opened applications like Orkut, IM messengers etc just when his boss arrived to his/her seat. Even you may have an application running or web site opened which contains or display your private confidential data. We had searched for different free applications on the web and found few of them really cool and worth mentioning to the readers after testing them all.
AceHide Free - It is a small tool to hide all the opened application one by one with a keyboard shortcut which you can specify.
Hot Key to hide - configurable .
To download Acehide free please visit http://www.softpedia.com/progDownload/AceHide-Free-Download-1673.html