I downloaded Thunderbird and I can't figure out how to install it. There isn't an installer - in fact, there don't seem to be any executables in the package at all. The file I got is called "thunderbird-18.104.22.168.tar.gz". If this is the wrong file, tell me. I'll feel stupid, but that's better than having no email . Needless to say, I'm pretty new to Linux. I've been using Ubuntu 7.10 for about three and a half hours now.