HELP! Can't update YUM

I'm trying to update the YUM and unfortunately it is showing me this error:

============================================== Setting up Update Process Setting up repositories http://software.virtualmin.com/gpl/rhel/5/i386/repodata/repomd.xml: [Errno 14] HTTP Error 401: Authorization Required Trying other mirror.

When i manually go into that particular address, it prompts me for a username/password. I don't want to be locked into this without some sort of access to repo unless there was something in the docs that I missed ....