Apan And RRd tool integration

Hello
I want to integrate the APAN and RRD tool for nagios…so that I could generate the snmp graph of the disk used or graph of the load of the server…
my rrd tool is working fine…and my nagios too…but when I integrate APAN with RRDTOOL, then I cudnot see the graph I desired.
will anyone please help mee…

Never used apan, what is it and where? I use nagiostat to graph all stats like disk usage, fping, packetloss, etc.