up2date checks with the official RedHat servers to see if there are any updates you need to install on your system. If up2date doesn't show there is an update, then there isn't an official update. You can go to distrowatch.com and look up RedHat to see what versions of software they have in the release.
If you want a newer kernel, you will have to compile your own, or get one somebody else compiled. No, you don't need to install any kernels between the version you have and the version you want. You can jump from 2.4.20 to 2.6.1, if you want.
If you want a newer KDE, pretty much same as above. Check kde-redhat.sourceforge.net . They have an apt repo... See next paragraph.
You can go to ayo.freshrpms.net and get apt. There are third-party servers that have updated software you can download and install with apt. Of course, they aren't "official". But, I run Fedora and have a number of repositories listed in my apt list.
Last edited by ranger_nemo; 02-02-2004 at 07:15 PM.