WTB: A Cheap Server

[GeForceX]

I'm new to the whole server administration scene so I'd like to get started with a server that will be able to run Linux as:

DHCP
DNS
VM
VPN
File Sharing
NAS
Web Hosting

My budget is low -- I just want to get started with the basics. It can be Atom-based or an older server (1u-based).

Thanks!