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[Frank Bax]

Ron Thompson wrote:
> The question is: Is it possible to set up an open wireless router in such a 
> way that anyone who finds it could communicate to the host computer?   The 
> internet isn't available so normal e-mail isn't available.


The router is the "host".  Most routers will do what you want "out of 
the box"; since they have DHCP enabled.  With DHCP enabled; computers 
are able to connect to the router either wired or wireless.  All 
computers that obtained their ip address from the same router will be 
able to communicate with each other.

Any consumer grade UPS that is designed to run a desktop system for 
15-30 minutes will run a router for several hours.  A DC/AC converter 
connected to your vehicle's lighter outlet will easily turn that vehicle 
into a generator.

What kind of communication are you expecting bewteen these connected 
computers?  You won't need email since the range of wireless signal on 
routers is so low you can more easily use verbal communication to speak 
to the other party.  For long range communication, the trick will be to 
get multiple routers connected to each other!  That's normally what the 
internet does - without telephone or internet support, it won't be so easy.