Some useful links for setting up MRTG on Redhat and it's basic generic use.
21st June 2004 - danielt@lexicon.net

A good description of using the built in config and index maker:
http://www.chinalinuxpub.com/doc/www.siliconvalleyccie.com/linux-hn/mrtg.htm

There are some issues with installing on the basic Redhat 8 system
You will see lots of errors like:
Malformed UTF-8 character (unexpected non-continuation byte 0x20...

This post explains what to do:
http://www.ee.ethz.ch/~slist/mrtg/msg21283.html