Here's where I install BusyBox the hard way. BusyBox allegedly has some scripts that will automate this installation, but I'd rather do it myself. I just put BusyBox in the /bin directory, then I create lots of links to BusyBox. BusyBox will act like whatever link points to it, so if I create (and run) a link called "ls" that points to BusyBox, BusyBox will act like the "ls" command. Pretty amazing. As for what links to create and where to put them, I just match up the list of available BusyBox commands with the locations of those commands on my installation. It's the easiest way to figure out what goes in /bin, /sbin, /usr/bin, and /usr/sbin.