Microsoft revealed today that no 32-bit versions of Windows Vista will be able to play back ?next generation high definition protected content? (translation ? studio-released BluRay and HD-DVD movies). By far the majority of PCs use 32-bit processors, because despite AMD?s efforts to push 64-bit CPUs into the marketplace early, Intel?s first widely-promoted 64-bit CPU is the just-released Core 2 Duo.APC Magazine