I am tired of having a PC, recently I bought a new computer from Dell that provides more speed and is much more up-to-date. It came with the Vista and I recently updated it to Windows 7, which is much better than Vista. I am getting tired of Windows 7 already. At my college we are running Mac and I am aware how much better a Mac is than Windows. I would like to turn my PC into a Mac. If I bought the Mac operating system from Best Buy can I install it on my PC and totally get rid of Windows 7? My main objective is that the Mac needs to recognize my DVDR drive and my USB wireless internet receiver. Is it possible to install the Mac OS on top of my Windows PC?