I am trying to load the ecw files into mapwindow as a layer but get a message that it is an invalid data source. I know I have to connect the projection and other data to the ecw file but just can't find out how. I have roamed the web but couldn't find any explanation. I might be searching the wrong key words due to my lack of knowledge. I also tried to load the ecw file in ecw header editor but it won't load there either.