http://software.freshmeat.net/projects/printerspy/?topic_id=154%2C152%2C253
for a Perl/TK based Linux program.  Could be adapted to work w/ a webserver.

http://www.tucows.com/preview/332256.html

What is sad is that most of the results I found were for auditing/watching the employees.  I guess 
watching the worker drones is a bigger business than getting something done remotely.

Brian Kelsay