http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/mrtg.html
Great little program. Here's one I have for a frame relay on a portmaster:
http://ns1.oakweb.com/mrtg/pm.html If you run it on NT, about the only
problem you may have is finding a good cron daemon to run mrtg every 5
minutes or so...
David Edwards