ooo thats a great box for serving. heres what you do: (this is if you are webserving/irc/ftp/whatever you want)

[1] install a unix, no x or anything x related so you just have the shell

[2] setup ssh so you can edit things

[3] setup the RAID config for nix, it should be available on install

[4] i recommend netbsd or openbsd for this kind of serving so try that

[5] install text utilities like vi, pico etc

[F] have lots of fun on your new server, you lucky gal you.