The temperature at the camp rarely rises above -30° Celsius. These kind of environments are extremely bad for computers because of the humidity inside the tents and the huge difference in temperature that causes condensation. And batteries also don't like low temperatures as they tend to lose their power very quickly.
Despite the challenges, the employees installed an 802.11b/g access point at the camp's headquarters and then established a wireless LAN using four laptops with Intel's Centrino mobile technology, the company said. Another computer was placed outdoors and connected to a satellite phone to provide the network with Internet. The hot spot could be accessed by anyone at the camp who had a mobile or Pocket PC.According to Intel the Wi-Fi hotspot worked very well, despite the bad environment.
More info at Computerworld