Hi, Parallels use InstallShield to create the setup package for the Parallels Tools. I created a respons file using PrlTools.exe /r and I got a Setup.iss response File. But if I try to install silently with the followingg command PrlTools.exe /s Parallels Tools are not installed. What's wrong? For details regarding InstallShield see http://helpnet.macrovision.com/robo/projects/installshield11helplib/IHelpSetup_EXECmdLine.htm Best regards Ulli