Further to my previous message regarding custom hacks for m0n0wall to 
provide information, I found this on eBay:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=16145&item=5134669215&rd=1&ssPageName=WDVW

I'm toying with the idea of getting one and one of those Compaq SFF 
systems to use m0n0wall with.

Question is, what sort of information could be displayed that is useful?