REM Add the following lines to your autoexec.bat:

REM ******************************************************
REM Taken from CurrDir.bat and SetEnv.bat
REM ENVPATH points to current directory
set ENVPATH=c:/VTOSSDK
REM DOSPATH points to current directory 
set DOSPATH=c:\VTOSSDK
REM GNUPATH points to directory tree of GNU GCC compiler
set GNUPATH=%DOSPATH%\compiler

SET PATH="%PATH%";%GNUPATH%\GNU\BIN;%GNUPATH%\RCBIN
SET GCC_EXEC_PREFIX=%GNUPATH%\GNU\LIB\
SET INFOPATH=%GNUPATH%\GNU\INFO
SET C_INCLUDE_PATH=%GNUPATH%\GNU\include
SET CPLUS_INCLUDE_PATH=%GNUPATH%\GNU\include\cxx;%GNUPATH%\GNU\include
SET GO32=DPMISTACK 2048000
REM Set TMPDIR to point to a ramdisk if you have one
SET TMPDIR=C:\TEMP
REM ******************************************************