Hi! and thanks for you fast reply, temporarly I run my apps copying all .dll files in the same folder where is located the .exe file but is not a "clean" solution as you know. I noticed in the web that NSIS is a popular choice, moreover, I downlod it but I did´t start to work with it because first I want to be sure that there is not available any pluging or tool inside code::blocks to solve this issue. But as you mentioned maybe is time to put my hands in NSIS. Thanks again for the information, particularly I was not aware about Dependency Walker utility. Very usefull.