installing and try to update firefox with yum
 

using redhat el4 linux and try yum for update or install firefox following message generate after runing yum.

Setting up Install Process
Setting up repositories
No Repositories Available to Set Up
Reading repository metadata in from local files
Parsing package install arguments
No Match for argument: firefox
Nothing to do

my /etc/yum.conf is empty no idea what to do?
got help of federo but not el4 linux
regards

RHEL 4 doesn't use yum by default. Try "up2date firefox".