Many thanks for the welcome. I'm afraid I'm still trying to work out the format here, so I hope I've replied to the right place. I should have mentioned I'm using Fedora Core 2. As you can probably tell from my post yesterday, I'd spent a very frustrating day trying to work out how to install applications - anyway, my first success was late last night when I managed to install Firefox by untarring it, cd to the download directory and typing rpm. -i firefox.rpm (or thereabouts). Things are starting to make a bit more sense.