[CentOS] Using YUM to install after server only install

Hi Gang-

I just installed Cent 4.4 using the server only CD.  Perhaps I  
overlooked a step, but I am trying to do this:

yum install zlib

Which gives me:

Setting up Install Process
Setting up repositories
kbs-CentOS-Extras         100% |=========================|  951 B     
00:00
kbs-CentOS-Misc           100% |=========================|  951 B     
00:00
update                    100% |=========================|  951 B     
00:00
kbs-CentOS-Misc-Testing   100% |=========================|  951 B     
00:00
base                      100% |=========================| 1.1 kB     
00:00
contrib                   100% |=========================|  951 B     
00:00
centosplus                100% |=========================|  951 B     
00:00
addons                    100% |=========================|  951 B     
00:00
extras                    100% |=========================| 1.1 kB     
00:00
Reading repository metadata in from local files
Parsing package install arguments
Nothing to do

Yet, I can search and find it.

Thank you in advance.

-Scott