For more information on kernel modules and their utilities, refer to the following resources.
lsmod man page — description and explanation of its output.
insmod man page — description and list of command line options.
modprobe man page — description and list of command line options.
rmmod man page — description and list of command line options.
modinfo man page — description and list of command line options.
/usr/share/doc/kernel-doc-<version>/Documentation/kbuild/modules.txt — how to compile and use kernel modules.
http://www.redhat.com/mirrors/LDP/HOWTO/Module-HOWTO/index.html — Linux Loadable Kernel Module HOWTO from the Linux Documentation Project.