First of al i like to say that i am new at this.
I have made a simple cmd file that installs al my dvd burning and ripping sofware
and burned all to cdrom
Now my problem when i click on the cmd file every thing works fine. but i made a menu where i can select every thing or choice to instal all and connected the all to the cmd file but when i select the all link the cmd file runs but gives a error of location.
this i how my cmd file looks like
ECHO.
ECHO Bezig met installeren van dvd decrypter
ECHO Even geduld a.u.b.
start /wait %CDROM%\dvd\dvddecrypter\SetupDVDDecrypter_3.1.9.0.exe

ECHO.
echo bezig met dvdshrink
echo Even geduld
start /wait %CDROM%\dvd\dvdshrink\dvdshrink32setup.exe /SP /VERYSILENT /NOREBOOT

ECHO.
ECHO Bezig met instaleren van Anydvd
ECHO Even geduld
start /wait %CDROM%\dvd\anydvd\SetupAnyDVD4572.exe /s

echo.
echo Bezig met installeren van nero burning rom
echo Even geduld
start /wait %CDROM%\dvd\nero\nero6603.exe /SILENT /SN=1Axxxx-xxxx-xxxx-xxxx /WRITE_SN /NOREBOOT

when i change the %cdrom% to my dvdstation letter the cmd file works, but will this work on other computers that have a different letter as dvdstation

Do not see how %CDROM% is being set. If this command file is on the CD, why have the %CDROM% variable?
You may have an autorun.inf, which runs your menu? The menu can run the command file below, located inside the dvd folder to install your software.