I don't want to start a flame war ... But a good point was brought up; telling someone to google the answer to there question is the same as telling them... Your to #%$#%$#@ stupid to figure out the answer, buzz off.
It reminds me of the hostile nature of slashdot and the post's on there. The name of this website is linuxquestions.org which means he/she doesn't know where to go for the answer and is looking for help. If you don't know the answer you don't have to post, right? You could also have google'd the answer to his question for him and filtered out the junk and provided him with the closest answer.
I know this doesn't belong here but this exactly the type of attitude the linux community doesn't need. The nature of linux is open and community based, not an elitist club. IF it was an elitist club it would be called Apple OS or Windows.
Now I should point out MRTG and RRDTools are some of the hardest to use if you don't understand anything about oid’s and snmp. The documentation is also very poor compared to some of the products I've used.
Here is a link to get you started on answering your question, buts proabbly not exactly what you’re looking for: