Hi and welcome to LQ.
The most conveniant way of installing it would probably be by apt-get or a similar tool. You can probably grab it from freshrpms.net or some similar site.
Oh, and VNC isn't such an "obvious" choice. You can have X use a remote X server for display (meaning your laptop or whatever other system you use), or you could simply enable X forwarding in the sshd_config on the server. Then log in using
ssh -X user@host and just type the name of a graphical program to have it displayed locally (on your...say laptop).
Håkan