Antenna Signal Booster

we live in military dorms and there is no signal inside the dorm, so I'm looking for a solution (DIY) where cn I buy some sort of antenna that borne by us can use our mobile phones in the rooms without replacing the window signal.

Where to buy links for help would be

You can buy a reminder here
http://www.cellphoneshop.net/

but you can use something like an antenna. All metal poles, you can set your phone. Or even pack your phone in a chain of gold or silver will help.

Wilson antenna company manufactures equipment to increase cell ... com ... hope this helps