1 Unpack the tarball. tar -xzvf name.tar.gz or gzip -d name.tar.gz ; tar -xvf name.tar
2 Move roxirc to where you want it, such as /usr/local/bin or ~/bin
3 Move the remaining files (except CHANGES and INSTALL) to ~/.roxirc
4 Edit ~/.roxirc/config and ~/.roxirc/menus to your liking
5 Run roxirc and look through /set for more options 

See http://roxirc.lighter.net/ if you need more information
