Yum can seem to find very,very few of the rpm's I have looked for. Do I need to add repositories? If so what exactly should I add to /etc/yum.repos.d/CentOS-Base.repo? This is what is there now and thanks for any help:

[base]
name=CentOS-$releasever - Base
baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

#released updates
[update]
name=CentOS-$releasever - Updates
baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

#packages used/produced in the build but not released
[addons]
name=CentOS-$releasever - Addons
baseurl=http://mirror.centos.org/centos/$releasever/addons/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib
baseurl=http://mirror.centos.org/centos/$releasever/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

#packages in testing
[testing]
name=CentOS-$releasever - Testing
baseurl=http://mirror.centos.org/centos/$releasever/testing/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

Find alternative and other RPM repositories you want to download from, yum is not limited at all.

Thnaks, but I have no idea where they are or how to do that.

CentOS doesn't have many third party repos, but you could try dags. The rpms work on any version of RHEL4 and derivatives.

You're missing the "enabled" parameter in several of your repo files. For those repos you wish to automatically search from each time you run a yum command, set "enabled=1" in the relevant repo file.

Whenever you wish to search from a repo that isn't enabled by default (because you've set enabled=0 in the particular repo file), add the following to the yum command line:

yum --enablerepo=<repo_name> whatever_command

The "--enablerepo" and "--disablerepo" directives override the "enabled" setting in your repo file.

Adding the DAG repos really adds a lot, also was able to add those from centos.karan.org - thanks all!