You really didn't give much information, such as what distro, desktop, or mainly, what type of file, but I'm going to take a stab in the dark at an answer anyway. The really simple answer is to right click on the file (I'm going to assume it is a tar.gz file or something like it) and choose ''extract here'' from the menu. This will work with kde in most distos. Another, pretty universal, way is to open a shell, cd into the directory where the file is and type ''tar zxvf yourfile.tar.gz'' (witout quotes and substitute the actual file name for yourfile). For example if your file is superkaramba-0.36.tar.gz, in a shell you would type ''tar zxvf superkaramba-0.36.tar.gz'' (again without the quotes). If you want to know much more on the subject go here http://www.userlocal.com/helpbasic.php Hope this helps a little. - Gary