Hi, Has anyone installed this version of Windows 7 on their Mac through Parallels? http://www.softwaresupplygroup.com/microsoft-windows-7-home-premium-64-bit-oem-branded.html There is a note that the branded version is more difficult to install for Mac users -- how much more so? And if I get the non-branded OEM, would that work without a problem? I'm installing on my new Macbook Air. Thank you!