Hello everyone, I have build pjproject 1.5.5 on Windows XP using MSYS-CN(http://code.google.com/p/msys-cn/). pjsua-win32 download link: http://www.heiher.info/service/files/pjsua-win32.exe More information: http://www.heiher.info/1364.html Best regards! Heihaier