Script for counting # of NAS ports in use?

Before I write one, I wonder if anyone already has a script or module for counting the number of ports on a NAS that were in use at a given point of time? I know this can be done by collecting the SNMP data sent from the NAS, but I would rather do this by querying the radacct table in a SQL database. -- Scott Langley scott@ruralnetwork.net Systems Administrator Rural Network Services