Hello, I have tried and to make to execute RunOnceEx from dvd, here the script: IF EXIST D:\CD.txt set CDROM=D: IF EXIST E:\CD.txt set CDROM=E: IF EXIST F:\CD.txt set CDROM=F: IF EXIST G:\CD.txt set CDROM=G: IF EXIST H:\CD.txt set CDROM=H: IF EXIST I:\CD.txt set CDROM=I: IF EXIST J:\CD.txt set CDROM=J: REG ADD %KEY%\020 /V 1 /D "%CDROM%\install\js56nit.exe /Q:A /R:N" /f REG ADD %KEY%\020 /V 1 /D "%DVDROM%\install\js56nit.exe /Q:A /R:N" /f it is from CDROM that give DVDROM do not work.................. Thanks to anyone can help me Avr3