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04:35, 22 June 2012 [[User:Jack|Jack]] doesn't own a Mac so he has no idea if [[OverPowerOnline]] even works on one. The best way would be to use virtualization software like [http://virtualbox.org VirtualBox] or [http://vmware.com/vmplayer VMWare Player].
Please note that virtualization is essentially running another operating system within your current computer (called the host system). You will need a valid licence key for any operating system you install.