Yea, the only real difference between a workstation and a server in linux is most servers dont have X installed (or maybe X with a light window manager like fluxbox or Enlightenment, no gnome or kde). A server isnt used much (you wont play games, browse the web or chat on a server) and a server....serves. Like, you'll install apache, dhcpd, bind or whatever you intend to serve.
i have 2 gentoo boxes. same base system but my workstation has gnome, gaim, mozilla, curphoo, nvidia 3d drivers, games, all the fun goodies.
gentoo server: bind, apache, ntpd, i have X but dont use it and i usually just ssh in to change stuff.