Hi to all. I'm trying to test your example at http://sipekapps.googlecode.com/svn/trunk (Example1_Click2Dial_pjsipDll) I can generate the solution without any problem but when i start the executable i get a System.DllNotFoundexception. "Unable to load DLL 'pjsipDll.dll': The operating system cannot run . (Exception from HRESULT: 0x800700B6)". I've placed pjsipDll.dll everywhere... in system32 in the bin/debug directory in the lib project but the problem still remains! Where am i wrong? Thanks to all in advance -- /*************/ nik600 https://sourceforge.net/projects/ccmanager https://sourceforge.net/projects/reportmaker https://sourceforge.net/projects/nikstresser