Often Techies feel to have the Built number of OS they are using. Like I felt. Few OS versions have this info at the Desktop screen like Windows 7 Beta, RC had but few don‟t have .To find out these details and much more info like product edition, build number and revision number for Windows Vista, Windows Server 2008,Windows 7 that is installed, follow these steps:
Open Registry Editor by typing Regedit in Start Search, then hit Enter.
Go to the following registry key: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion
In the right side pane, you will see lots of registry subkeys and its value date. These keys will give you the required information about syour OS…..
1. ProductName : of Windows
2. EditionID: edition aka flavor of the OS.
3. BuildLabEx: Contains build and revision number
4. Current Build : contains build number
5. Registered Owner
6. Registered Organization