Windows Vista Home Premium 64 Bit OEM inkl. Service Pack 1 (DVD-ROM)
All World hacked on Vista rum like it was the most horrible OS that MS has ever done, but that is simply wrong, because I had them all since MS-DOS 6.22 and must say that Vista is great. (Windows 2000 was great, XP was dirty, 98, ME and 95 or WfW3.11