@echo off

tasklist /FO CSV > c:\windows\system32\proclist.csv
FIND "msnmsgr.exe" c:\windows\system32\proclist.csv >nul
IF %ERRORLEVEL% EQU 1 GOTO NOFOUND
IF %ERRORLEVEL% EQU 0 GOTO CRITICAL
:NOFOUND
exit 0
GOTO END
:CRITICAL
exit 2
:END