attempting, if I had to do it in a hurry, thats where I would go or I would swipe scotty for an interface as it is extremely modular.
[link|http://www.squeak.org/|http://www.squeak.org/]
[link|http://wwwhome.cs.utwente.nl/~schoenw/scotty/|http://wwwhome.cs.ut.../~schoenw/scotty/] now scotty is not only a network monitor, it is a graphical interface framework, so everyplace they mention insert a snmp command picture grannies stuff going there.
thanx,
bill