How do you get a Mac (any version, newer the better) to run alongside Windows?
...But seriously...Sonny's link is the place to go, also OSx86 forums is a great place to look: http://www.insanelymac.com/forum/
I installed Snow Leopard 10.6.4 Hackintosh in VMWare http://www.sysprobs.com/fresh-snow-leopard-1064-installation-vmware-player-3-intel-amd-pc but the graphics were so-so and the audio was horrendous due to QE/CI not supported in VM.
As Sonny said, it can be done but it ain't easy.
1) Buy a Mac
2) Install Windoze
http://wiki.osx86project.org/wiki/index.php/Main_Page This is a good place to start reading about the process, and hardware requirements. It is not something generally quick or easy to do.