I was actually looking for the data itself. I believe I have found it in some rrd files, I just need a good way to extract it.
Making graphs was not actually the issue, I already have that functionality setup. What my boss wants is the raw data from the rrd files, so that it can be manipulated and fed into formulas giving overall dekta network stats for all of our systems (broken down by various classes of system). In simpler terms, my boss wants more complex numbers that what already exist in Nagios as is.
So I guess the better thing I need is a better way to extract the data from the rrd file.
Thanks for the reply though.