I have this as my 404 error page...

[code:1]The page that you requested (
<!--#echo var="REQUEST_URI" -->) isn't here.
Your IP Address is:<!--#echo var="REMOTE_ADDR" -->
Your Browser Version is:<!--#echo var="HTTP_USER_AGENT" -->
This Site is:<!--#echo var="HTTP_HOST" -->

<!--
                                                                                                                                                                                                                                                                                                                                                                                                                                         
-->

[/code:1]

That outputs all of that info.  It is an shtml file, which I know little about.  I would guess that there is pre-processing server side that must be done.

To see how that comes out, just go to http://www.litelinux.net/faskdjl  That page doesn't exist, and will bring up the 404 error page.

I would imagine that you could use the IP Adress directive to get the info you need.  This would display...  not log.  You should probably still have a firewall doing logging.

He could always just make a seperate frame that runs that code...  That's all that I know on this subject.

http://www.allscoop.com/phpcode.php

This site seems to have something...  I am running it on my server right now.  It even tells you how to link to show an image of the info.

I was just about to post saying that looking up the hostname would be better, as it would show those that would try to access your web cam, that they can be tracked better.  I know that if I was just some web browser, I would be more concious of where I went if it said blah.city.isp.tld rather than just the four octets of the IP address...

I found this in the mean time though: http://www.phpaddict.com/forum3/191.html

A working example of this is here

I would imagine that you could put in a frame to run this, or just insert it into an already PHP page.

Edit: if you look at the source for the two PHP scripts that I have posted, you can pretty easily figure out the required directives, and write up your own combination for a page displaying that infomation.