MICROSOFT WINDOWS VERSION

VersionVersion	Windows Revision
Windows 7 Version 6.1	Windows 7 (Name of Vista, e.g. Windows 7 Home Premium)
Windows Vista Version 6.0	Windows Vista (Name of Vista, e.g. Windows Vista Home Basic)
Windows XP 5.1.2600	Windows XP (Name of XP, e.g. Home Edition, Professional, Media Center Edition)
Windows 2000 5.00.2195	Windows 2000 Workstation
Windows ME 4.90.3000	Original release of Windows ME.
Windows CE 3.0	Windows CE 3.0
Windows 98 4.10.2222A	Windows 98 Second edition
Windows CE 2.1	Windows CE 2.1
Windows 98 4.10.1998	Original release of Windows 98
Windows 98 4.10.1691	Beta Release of Windows 98
Windows 95 4.00.950 C	Second release of Windows 95 OSR2.5 with FAT32, MMX, USB and AGP support.
Windows CE 2.0	Windows CE 2.0
Windows CE 1.0	Windows CE 1.0
Windows 95 4.00.950 B	Second release of Windows 95 / OSR2 (does support FAT32 and MMX).
Windows NT 4.00.1381	Windows NT 4.0 Workstation.
Windows 95 4.00.950 A	Windows 95 with Service Pack 1 or OEM Service Release 1.
Windows 95 4.00.950	Original release of Windows 95.
Windows NT 3.51.1057	Windows NT  Server Version 3.51
Windows NT 3.51.1057	Windows NT Workstation Version 3.51
Windows 3.11	Windows for workgroups Windows 3.11
Windows NT 3.1	Windows NT 3.1
Windows 3.1	Windows 3.1
Windows 3.0 Courtesy of Computer Hope	Windows 3.0