[CentOS] unsupported modules on CentOS 4

I know that appletalk module is not included in RHEL 4 and therefore not
included in CentOS 4.

RHEL 3/CentOS 3 had them in kernel-[smp-]unsupported

Is there a way to get the module loaded in CentOS 4.1 or do I have to
compile a kernel from source?

Thanks

Craig