Because buddy.. Red Hat 9 is End of Life.. meaning you get no updates from RHN... sorry.. Either upgrade to Fedora 2 or go with something like SuSE 9.1.. which, by the way, I HIGHLY recommend... It's terrific with everything from hardware detection to ease of configuration and use...
You can download the 9.1 personal ISO from
www.suse.com/us or you also install the Professional edition (which most people don't need) via FTP using a bootable ISO disc.
Go with SuSE, you won't be sorry...