Thanks guys! I checked out Wireshark - holy mackeral! A bit more than I can handle unfortunately. Basically where this started was I'm looking for a way to see the browsing history in Firefox 3.x from a few computers on the network. They're being manned by volunteers working on a drug abuse hotline and so, even though it's technically a business, there's no money involved, or even available! Hence I'm looking for something cheap(free). Also, I don't want to actually put filtering in place because these guys occasionally really have to go to some "questionable" websites to do their job. I'd just like to be able to get an idea of what kind of resources are being used - or maybe misused - via the Internet so that I can weigh it against the quality of work achieved. I'd be happy seeing just the history logs on the computers, but some of the guys decide to change the history settings and wipe it out. Paranoia runs deep.
I've searched in vain for a way to lock the history down in Firefox, so I thought I'd somehow point the browser to a "proxy" that would log the url then pass it thru to the router undetected. I also thought about some way to monitor the database that stores the history and copy all new entries off to another table for archiving, but I'm stuck there too.
Any other ideas on how to do this out there?