cflis,
It depends on whether or not the web serve is on the local machine. If so, then I presume there are logs being generated. Given that, I'd probably make a copy of the logs, slurp them into TStringLists, and then begin parsing them from there.
If the local machine doesn't have a web server, e.g. it's using another machine to serve the HTPP requests (which is common in a business environment), then you could either search the logs on that machine for the local machine's IP address or (possibly) try parsing out the History (or the cache) of the local machine.
Hope this helps...
-- Lance