VirtualBox is a Virtual Machine software that can run OS under OS without dual boot. In Penetration environment this Virtual Machine very useful because we can learn how to penetration on the other system without make any damage. VirtualBox is an Open Source. This is the tutorial how to install VirtualBox on Backtrack 5.
First download the VirtualBox from http://www.virtualbox.org/wiki/Downloads
Then Install it. You can make new configuration about the OS that you want to Install to it. If you have an Windows XP SP 2 you can install on it and try to exploit it
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