Well RHL9 is quite old and for the most part un-supported now. One of the few places left is Fedora Legacy;
http://www.fedoralegacy.org/ you may get lucky by downloading the kernel-pcmcia-cs-3.1.31-16.i386.rpm from the FC1 updates directory.
Or you might try biulding from the src.rpm (pcmcia-cs-3.2.7-1.5.src.rpm) from the FC2 directory.
Or you may want to use a newer version of Linux, keeping in the Red Hat family may I suggest;
FC4
http://fedora.redhat.com/
CentOS
http://www.centos.org/