In a traditional wireless network, a wireless router acts as a base station. All wireless communications go through the wireless router, allowing nearby computers to connect to the Internet or to each other. Ad hoc wireless networks work more like walkie-talkies, because the computers communicate directly with each other. By enabling Internet Connection Sharing(ICS) on one of the computers, you can share Internet access.
![](http://img707.imageshack.us/img707/adhoc.jpg/1/w533.png)
nindot ni labi na if naa ka sa dorm nya one of your dorm-mate has connection and dont have. you can set-up Ad Hoc ICS of your friends' lappy and you good to go.. i've just done it sa ako house.. and it does work...