i know i'm going to have many questions in the near future (expecially networking, because i've never networked in linux and i'm planning on buying a cable modem soon, so i'm going to be wanting to run a 233mhz computer as a router/webserver/ftpserver/ircserver/ ect), so be warned

for now, how do i change the hostname or domain name or whatever shows in bash after the $ ??