I have been playing around with a program on my Windows Mobile powered HTC TyTn II. The basic idea of this Heath Robinson particular approach to mobile routers is that your phone uses an 3G/EDGE/GPRS/Dial Up (if necessary) connection to establish a working internet session, and then shares this with others via bluetooth or WiFi. If the other clients (laptops, other mobiles, pdas or even desktop PCs) don’t have their own connection to the internet, in the event of a power cut or not having a SIM card that works in that territory etc., then you can certainly enable them to work on the essentials as long as they stay in range of your phone. Obviously bluetooth connections need v.close proximity, and WiFi signals are very reliant on each device’s antennae, but it is good to know what can be achieved in emergencies. There are other more permanent approaches to meeting this sort of need, so feel free to click the link above.