Please be clear and precise about what operating system distribution you are using.

Red Hat Enterprise Linux 4 is usually abbreviated as "RHEL 4" or "RHEL4", and not "RHL 4".

In case you weren't aware, "Red Hat Linux" already had nine major versions and was subsequently spun off as Fedora Core 1, which is now simply Fedora and is up to version 10. Red Hat Enterprise is a quite different distribution with quite different focus and support options. I very seriously doubt you're using Red Hat Linux 4, released about twelve years ago and using the Linux 2.0.x series of kernels, but that's what I read in your node.