VMWare or VirtualBox for Mac OS X

I am on Windows Vista, and I will wish to install Mac OS X via VMWare or VirtualBox in order to be able to use X Codes and to program my application for iPhone (the SDK functioning only under Mac OS X).
Initially I would like to know if it is possible to install Mac OS X via VMWare or VirtualBox knowing that I have CD of installation of Mac OS X?
Then which is preferable, VMWare or VirtualBox? Which of it are the differences?

Thank you in advance!

Then the large difference C is that VMWARE and paying whereas VIRTUALBOX is free.
After I find that VIRTUALBOX is very well to make virtualisation at home.

OsX does not turn under VirtualBox. You have your answer :biggrin: