Ubuntu 7.10 (Gutsy Gibon) Final - PC (Intel x86) server install CD
The server install CD allows you to install Ubuntu permanently on a computer for use as a server. It will not install a graphical user interface.
PC (Intel x86) server install CD
For almost all PCs. This includes most machines with Intel/AMD/etc type processors and almost all computers that run Microsoft Windows, as well as newer Apple Macintosh systems based on Intel processors. Choose this if you are at all unsure.