@echo off

set bit=%PROCESSOR_ARCHITECTURE%

ver | find "2003" > nul
if %ERRORLEVEL% == 0 set win=2003

ver | find "XP" > nul
if %ERRORLEVEL% == 0 set win=xp

ver | find "2000" > nul
if %ERRORLEVEL% == 0 set win=2000

ver | find "NT" > nul
if %ERRORLEVEL% == 0 set win=nt

if not exist %SystemRoot%\system32\systeminfo.exe goto xphome

systeminfo | find "OS Name" > %TEMP%\osname.txt
FOR /F "usebackq delims=: tokens=2" %%i IN (%TEMP%\osname.txt) DO set vers=%%i

echo %vers% | find "Windows 7" > nul
if %ERRORLEVEL% == 0 set win=7

echo %vers% | find "Windows Server 2008" > nul
if %ERRORLEVEL% == 0 set win=2008

echo %vers% | find "Windows Vista" > nul
if %ERRORLEVEL% == 0 set win=vista

:xphome

echo You are running Windows %win% %bit%.


pause