iwl3945 driver is now enabled in rhel5.3 kernels -- need iwl3945 package in the distro to support it.
Above should read "need iwl3945-firmware package"...
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHEA-2009-0219.html