@Echo off
Setlocal
:: Get windows Version numbers
For /f "tokens=2 delims=[]" %%G in ('ver') Do (set _version=%%G) 

For /f "tokens=2,3,4 delims=. " %%G in ('echo %_version%') Do (set _major=%%G& set _minor=%%H& set _build=%%I) 

Echo Major version: %_major%  Minor Version: %_minor%.%_build%

if "%_major%"=="5" goto sub5
if "%_major%"=="6" goto sub6

Echo unsupported version
goto:eof

:sub5
::Winxp or 2003
if "%_minor%"=="2" goto sub_2003
Echo Windows XP [%PROCESSOR_ARCHITECTURE%]
goto:eof

:sub_2003
Echo Windows 2003 or XP 64 bit [%PROCESSOR_ARCHITECTURE%]
goto:eof

:sub6
if "%_minor%"=="1" goto sub7
Echo Windows Vista or Windows 2008 [%PROCESSOR_ARCHITECTURE%]
goto:eof

:sub7
Echo Windows 7 or Windows 2008 R2 [%PROCESSOR_ARCHITECTURE%]
goto:eof