Hi, after looking at the code of several of the scripts, i have to give up. What I have in mind is to force the user to choose one entry (application). The current version does nothing, if the user hits the install-button after deselecting all entries. Its ok, if he does not like the ofered software, but I want him to get a popup that he has to choose minimum one entry. Can somebody give me a hint? If I understood it right, pressing the install-button leads to the function "CreateFile" with argument "false" which is located in script "wpiscripts\generate.js". But I am stuck in reading and understanding the code. So, first of all, I do not really know where to put extra code and second, I do not know how to write that code in Java script. PS: Very impressive application. -- ciao mamba