I think what you do is right click the file and you get a menu to open with... there is a option to open with a "other application"? sound familiar? there it opens another menu, and shows the applications that it will open it with as default. down at the bottom is "Go There". click that, and in the program to run box type in the name of the program you want to associate with your bzip2 files. OR, when you right click the file and click "other application" in that menu, click "modify" and and select don't include in the menu for " " items. see if this helps you. if i'm off base, let me know.