Question : How to Backup Ubuntu Server 8.10

We have a dedicated server running Ubuntu 8.10 hosted off-site.

Its running VMWare server 2 which in turn hosts 2 windows servers.  
I back up the vmware folders to offsite storage using WinSCP to connect to the server.

My question is what should I backup from the Ubuntu server itself.  I.E. its entire configuration. If I lose this server I would need to recover it quickly from a base server at the host provider location.  I am only familiar with backing up and restoring Windows servers.  What do I need to backup on ubuntu to capture all settings and installed applications?  Can I restore a server and its apps?  Or would I have to re-install VMWare for example following a restore?

Regards
Graeme

Answer : How to Backup Ubuntu Server 8.10

The solution was to add these 3 missing lines to system.conf

fxoks=1-24
fxoks=25-48
fxoks=49-72

I feel dumb now since those are basic/required settings that I always configure in zaptel.conf and should have known that they needed to be in system.conf.