Cpanel has an autoinstaller most of the time. Find a host that provides Cpanel and ask them if they have an autoinstaller script for Geeklog.
I think it's better to do a manual install, it's a good way to get to know your software. In the long run you learn something about geeklog and become more interested in it. My first install of Geeklog was automatic, but I've done 4 or 5 installs since manually and have learned a lot in the process, especially about templates. Be sure to bookmark the geeklog forums just in case.