I have a small Graphical snmp viewer to show wan port speed in/out this soft i run in Windows Vista, and i cant remmber the name of it and i lost the soft when i reinstall windows.
The software was a freeware soft.
Site seems down so i uploaded it to a file sharing site monomon
Just in case someone is searching for something similiar for osx: http://www.memention.com/airportflow/
Work's with pfSense as well as it just uses snmp.