1) I want to install my application only in 64-bit windows 2008 machine. 2) In the choose install set custom dialog my target installation directory showing like this "C:\Program Files (x86)\" but my expected results need to be "C:\Program Files\" The first point is implemented in easy way. For second point I need your help ,In the Template Summary i kept like this "x64;1033".But still am not getting the expected result .The application code(*.exe & *.DLL) build in 64 Machine only. I done earlier but I forgotten how I implemented in installshield10x version. Could you please let us know how get the expected result.