There is a executable file which need not to install. The latest version is 4.3. The url is: http://www-k3.ijs.si/kokalj/pwgui/ Pengju Ren renpj at dicp.ac.cn State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 zhongshan Road, Dalian, 116023, P.R. China