Open it up in midnight commander, and it will unpack it into a virtual directory structure, complete with install/uninstall scripts.
Look at the install script to see what it's thinking, pull out the file structure, copy into your filesystem.
Oh, and hope. Because often you need to get matching glibc and other dynamic libraries that the program was compiled against. Which isn't the end of the world as the dynamic linker will look in the local directory where the program is first for libraries, but it becomes a hassle pretty quickly.