in order to have mouse contextual menu, under windows explorer, when right-clicking on a picture directory, you need first to: 1- install ebdjpg with install.bat 2- execute ebdjpg2k.reg (IMPORTANT: see below *). Then, there's 3 steps (you can test with pictures in the release, or thaiviet.zip pictures library): step1: reduce size of pictures in order to make them all 640x480 in a new directory - right-click on the directory, and press "1": __ebdjpg#1:reduce ~.~ *: Because some issues have been seen under winxp, I recommand you to save whole registry (with regedit) before executing ebdjpg2k.reg . In case of errors double-clicking on directories, you can try : _directory_explore.reg and _directory_open.reg ~.~ click on the right side of the picture, in order to go forward.