An updated gaim package has been released for CentOS-3

https://rhn.redhat.com/errata/RHSA-2004-604.html refers

Updated files are :-

gaim-1.0.1-1.RHEL3.i386.rpm

in updates/i386/RPMS/

This is available at http://mirror.centos.org/3.3/ and should be on all mirrors within a few hours.

To update to the latest version 'yum update gaim' should be
sufficient.