No need to detect Administrator privileges for XP / 2003

updateHostsWindows.bat

@@ -4,6 +4,12 @@
 :: THIS BAT FILE WILL BE LAUNCHED WITH ADMINISTRATOR PRIVILIGES
 @ECHO OFF
 
+VER | FINDSTR /L "5.1." > NUL
+IF %ERRORLEVEL% EQU 0 GOTO START
+
+VER | FINDSTR /L "5.2." > NUL
+IF %ERRORLEVEL% EQU 0 GOTO START
+
 :UAC_ADMIN
 >nul 2>&1 "%SYSTEMROOT%\system32\cacls.exe" "%SYSTEMROOT%\system32\config\system"  
 if '%ERRORLEVEL%' NEQ '0' (