The desktop pplication I'm developing requires .NET Framework 3.5 and I want to build an unattended (just progress bar) setup that will install only .NET Framework 3.5 . I extracted 20100118_SNMsynth and 7zip in the same directory but I have a few questions . 1. Where do I have to save dotnetfx35.exe ? 2. Witch of these is required by .net framework 3.5 ? PROCESSDNF11=YES PROCESSDNF20=YES PROCESSDNF3520=YES PROCESSDNF3530=YES PROCESSDNF3535=YES 3. I want to make a setup that will run on XP / Vista / Windows 7 , both x86 and x64 versions so how do I configure this ? TARGETOS= 4. Is there any other settings I should change and something else I should take in consideration ? Also , does anyone have an already built setup for .net framework 3.5 and post a download link ? NEED HELP URGENTLY Thanks