It rebooted, and the hard part started: Porting all my hacks and configurations to the new one. I was really wondered how these Red Hat have fixed what I used to fix myself in Red Hat Linux 9! After configuring small things here and there, I went to patch the boot script /etc/rc.d/rc.sysinit which I hack for many things, and guess what? Many of my hacks have been already done there, or were nonissues!
One more thing: Some small things I never couldn't configure to work, started working! DRI for XFree86 on a 2.4 kernel is one of them. BTW, the bad thing is that after a week and a dozen of tries, I still cannot compile their kernel :(.