[Centos] Alternative architecture CentOS 3 builds?

Hi there.

Although RHEL 3 is available for several different architectures, 
CentOS appears to only be available for the i386 architecture.  Are 
alternative architecture rebuilds outside the scope of the CentOS 
project, or is there some other specific reason for that?

If one wanted to rebuild CentOS for, let's say the AMD64 
architecture, would that be a difficult process, or is it just 
something that nobody's yet done?

I'm currently buying an AMD64 system and I'm curious.

----
Nels Lindquist <*>
Information Systems Manager
Morningstar Air Express Inc.