your opinion counts

I have a redhat 9 Linux server that plays the role of my apache httpd with php/mysql server, as well as a samba(for my win hosts)/nfs(for my linux hosts) server. I got a cd through the mail for Linux suse enterprise server and Linux suse professional. Any recommendations before I upgrade my redhat server? I was thinking of first upgrading my Linux client pc before I do anything to my server to first get a hang of it. Any other recommendations?