@echo off
:CHECKA
  howbout a:\command.com >NUL
  if errorlevel 1 goto CHECKC
  goto DO_A
:CHECKC
  howbout c:\command.com >NUL
  if errorlevel 1 goto END
  goto DO_C
:DO_A
  status Copying new driver to a: drive...
  howbout a:\lan >NUL
  if errorlevel 1 goto NOLAN
  ncopy y:net3.com a:\lan\net3.com
  goto NEWA
:NOLAN
  status You need a subdirectory called a:\lan on your boot disk.
  pause
:NEWA
  newauto a:\autoexec.bat -N
  goto CHECKC
:DO_C
  status Copying new driver to c: drive...
  howbout c:\dos >NUL
  if errorlevel 1 goto NODOS
  ncopy y:net3.com c:\dos\net3.com
  goto NEWC
:NODOS
  status You need a subdirectory called c:\dos on your hard drive.
  pause
:NEWC
  newauto c:\autoexec.bat -N
:END