Tell me proper URL for yum checking

[SHIMADA, MAKOTO]

Thanks Ed Greshko;

> Exactly what are you trying to update via yum?  
No, I routinely use "up2date" to keep my RHEL4 machine up to date.

> You can't update the
> base packages of RHELv4 via yum since RH does not support yum at that
> release level. 
I know that.
However, I need to install another software,which require yum.
So, I have to install yum before the installation of the software.

What I need is the URL to solve the IOError: <urlopen error >.

Thanks.
Mark