echo off
if %1a == a goto drivec
if %1 == c: goto drivec
if %1 == d: goto drived
if %1 == C: goto drivec
if %1 == D: goto drived
if %1 == c goto drivec
if %1 == d goto drived
if %1 == C goto drivec
if %1 == D goto drived
goto wrong

:drivec
cls
echo Installing The CNC-CAD-CAM Package C:
md C:\cnc
md C:\cnc\machine1
copy trnsedit.exe C:\cnc
copy tralblaz.exe C:\cnc
copy readme.doc C:\cnc
copy temp.cnc C:\cnc\machine1
copy temp.src C:\cnc\machine1
copy code.dat C:\cnc\machine1
copy param.dat C:\cnc\machine1
copy cnc.bat C:\
echo Done
C:
path C:\cnc;C:\cnc\machine1
cd\cnc\machine1
trnsedit
goto outnow


:drived
cls
echo Installing The CNC-CAD-CAM Package D:
md D:\cnc
md D:\cnc\machine1
copy trnsedit.exe D:\cnc
copy tralblaz.exe D:\cnc
copy readme.doc D:\cnc
copy temp.cnc D:\cnc\machine1
copy temp.src D:\cnc\machine1
copy code.dat D:\cnc\machine1
copy param.dat D:\cnc\machine1
copy cnc.bat D:\
echo Done
D:
path D:\cnc;D:\cnc\machine1
cd\cnc\machine1
trnsedit
goto outnow

:wrong
cls
echo example: INSTALL C: or INSTALL D:

:outnow