My first encounter with SNMP was setting up mrtg monitoring of my router and
a couple of servers/hosts on my network here.  I wanted to retrieve and
display system load average statistics, which proved a bit tricky using
straight mrtg, so I wrote the attached script which can be used to easily
display any pair of numeric variables which can be retrieved with SNMP. 
Please include it in the contrib section of mrtg if you find it worthy. 
It's working fine here for displaying load averages (see
<http://www.fmp.com/mrtg>).

Please see the comments in the file mrtgcmd.py for usage information.

Please send bug reports, suggestions, flowers and pizza to Lindsay Haisley
<fmouse@fmp.com>

Lindsay Haisley
FMP Computer Services
http://www.fmp.com/fmp