Maybe this is not the correct verbage, but what I want to do is tell CENTOS / REDHAT to only update x packages from x repository, I have some custom RPM'S that keep getting replaced by updates.

For instance I have a custom BIND RPM that must NOT be replaced or if it is, it must be replaced from MY own repository where I would upload the updated modded RPM. Anyone have any resources for this or know the best way to make this happen?

How about just disable BIND from updating via yum, and do it manually when needed?

well i tried that but for some reason it was still replaced

Easiest way is to just exclude the bind packages in yum.conf.
Probably along the lines of: exclude=bind*

I suppose you could put this in a .repo too, if you have a particular repo that's causing you problems

If you want to run your own repo (which isn't that hard, really) you could try this link:

http://blog.kagesenshi.org/2007/01/howto-creating-your-own-yum-rpm.html

Awesome! thats exactly what I was looking for
Thanks for the help

Once when you setup your repo, check this out too:

http://wiki.centos.org/PackageManagement/Yum/Priorities

You should be able to give your own repo high priority so your bind never gets updated from package in other repos.