Hi, I am new in all this unattended installation and I have maybe stupied question about "RunOnceEx" in tutorial it seams that it is not well explauned or I just didn't get it. There are some commands that are not explained, such as: REG ADD %KEY%\010 /V 2 /D "REGEDIT /S %systemdrive%\install\alcohol\register.reg" /f what does this stand for and what letter "D" stands for? Why do you include this line for some programs and for the others not? or REG ADD %KEY%\015 /V 1 /D "%systemdrive%\install\DiskeeperPro_8.0.459.exe /s /v/qn" /f what "s" and " means at the end what does "f" or "qn" at the end stands for? Can you tell me where I can find more detaild description for this? Thanks in advance.