I have a wireless network on my second floor apartment which I would like to extend into my garage which is on the ground floor and about 100 feet away. The apartment has a large window, but it faces 90 degrees away from the direction of the garage. There is one other small apartment between mine and the outside in the direction toward the garage.

Should I be able to connect to the wireless network in my apartment from my garage? If so, what do I need to do to make this happen? My AP/router is a desktop system running Gentoo Linux. I can buy an antenna if necessary, but I have read that a Wok-Fi can work well.

I also have the task of setting up a hotel with a wireless router so their guests (myself included) can connect to the internet wirelessly. Reception in the lobby would be easy, but could reception be picked up in the rooms 150 meters away with the proper equipment in the lobby?

What inexpensive wireless router should I buy for the hotel that is reliable and doesn't need to be constantly reset?