Sorry to bump this topic up, but I found out your switches are only 1/2 right. For some reason, when you type /SAVEINF="install.inf", the install.inf file will be saved to the Windows directory automatically. Thus, it's better to provide a full path, like /SAVEINF="C:\install.inf". Similarly, when you use /SILENT /SP- /LOADINF="install.inf", the program expects to find an install.inf file in the Windows directory, if it doesn't, it'll simply execute /SILENT /SP-, without the LOADINF part.
Sorry if I'm wrong, I tried this on Kazaa Lite Mega Codec Pack 1.02, and found it out. Anyway, thanks for the switches

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