No, you're wrong in counting Win9x/ME as Windows 4.0 Actually, Win9x/ME are one single category operating systems, and Windows NT forms another category of operating systems from Microsoft. Win 7 is counted as the 7th number of operating system in WinNT line of Microsoft operating systems. Windows NT 3.1, Windows NT 3.5, WIndows NT 3.51, Windows NT 4.0, and its sucessor is Windows 2000 whose NT kernel version number is 5.0 (Windows 5.0 ). Next is Windows XP whose kernel version number is 5.1 (Windows 5.1) and 5.2 is Windows 2003 and WinXP x64-Bit editions. The sucessor(?) of XP, Longhorn or Vista is kernel version number 6.0 (Windows 6.0) and, Windows 7 is NT kernel version number 6.1 (The kernel versions of Server counterparts of both Vista and 7 are same as their non-server class equivalents). but Microsoft gave the operating system name as Windows 7. I think, Windows 7 cannot be considered as a Major Upgrade over Windows Vista, but it is a Major Improvement over Windows Vista( NT6.0 to NT6.1 ). I personally hate Windows Vista only because of its poor performance, and compatibility problems. Featurewise its a major upgrade to Windows XP. Thumbs up to Steven Sinofsky for a neat piece of software art :) -Jithin PG

"I studied but never topped. But the toppers of world's topmost universities are now my employees" - Bill Gates.