using a mirror for yum??

[WipeOut]

Hi,

I would like to update my yum.conf to talk to a local mirror.. The 
mirrors page says this..

http://www.mirror.ac.uk/sites/download.fedora.redhat.com/pub/fedora/linux/core/

but the existing yum.conf says this..

http://fedora.redhat.com/releases/fedora-core-$releasever

..but I can't browse the default link to try and figure out exactly what 
path I should use..

Any pointers..

Maybe there should be a page with the yum.conf entries for each of the 
FC mirrors..

Later..