the extras packages are now online..

http://centos.karan.org is what you want. Included on the main index page are all the details you need to get started, including a drop-in .repo file.

i386 in the mix. about 750 pkgs there already, another 300 odd coming soon.
x86_64 next.

--
Karanbir Singh { http://www.karan.org/ }