Telecharger image virtualbox mac os lion
Techinacally you cannot do this using MAC OS OEM distribution CD .
The reason is that the EULA for MAC OS states that an end user does not BUY a copy of the OS rather it is LEASED out to an end user.
So in short it is illegal for a person to reuse a copy of a MAC OS BUT you can download a hacked distro like iAtkos using a Bittorrent client.
You can use a free emulator like Oracle Virtual box.
A detailed step by step guide is in the following link.
bringdadabeer.com I had followed similar steps3 years back and managed to install Mac OS on a toshiba laptop :)