I have given myself and my group all the permissions available...not a good idea, but what else to do????? Downloaded a tar.gz file to /home/az/downloads. Command ./configure did not work as the bash considered the attempt as an command to drill down to a sub-folder.Tried, in the terminal, sudo aptitude install build-essentials, w/o success; also tried with apt-get, still none.Moved to folder with the file, typed ./configure -- no more success than before.Tried to move, copy, or set up a link to the file to /usr/src where I had successfully created a sub-folder, downloads, but could not do much as I am not the owner of src. So, no joy! All this in the hope of converting the tar.gz to a deb file using the alien command.I am enjoying this attempt to escape the clutches of Big Bad Blue, but XP, might, in the end, present the only sanctuary from my failures.