What is the best way to block my users from listening to the favorite
radio stations on work computers.
They are running win98 with ie6 with proxy enabled. I am running Nw6.2
and BM3.6.

Basically when they want to connect to radio station, they need a
plugin like surfernet. I have blocked them from getting to surfernet to download the plugin, but that is not the optimum solution

any ideas?