what to do with 3 computers

[watts3000]

Guys I have 3 computers I have my main athlon xp 1800 system that I work on I also have a 500 sc poweredge dell server that runs windows 2000 server I use it for my file server and I have another dell 4100 p3 gigahertz this machine has a burner and dvd on it but its only me and I need to put the 4100 back to use I was thinking about maybe using it as a backup domain controller or e-mail server I'm open to all ideas


Thanks

 

[bigshooter]

linux