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As far as your xbox has a wireless adapter and your router is configured properly you should not have any problems.
You are too far from the router.
It will depend on the strength of the signal. It will also depend on if you are using wireless g or a wireless b access point for your wireless services.
A wireless signal can go about sixty feet but usually its range will be forty of fifty feet in a home.
Type of router you are using has nothing to do with type of operating system you are running. What matters is wireless network adapters. As far as OSes recognize wireless card (wireless adapter must be compatible with your wireless network) you should not have any problems.
Officially it states: 70 m indoor and 250 m outdoor. I would take half of that.
To find the proper wireless routers one needs to know where internet usage will be used most, how far the distance is, and how many devices will be using it. There are many different types of wireless routers available now, a few being Belkin, Linksys, and NetGear.
Wireless routers connect to the modem through an Ethernet cable and also use a power cord to power the device. The Internet runs through the modem into the router. The router transfers the Internet into WiFi signals that the wireless receiver catches and transfers to the computer. Wireless routers have various signal strengths. The signal strength determines how far you can be from the router and still receive a WiFi signal. the N router transmits a strong signal that can reach throughout your house.
A USB wireless router can be purchased for about $40 or $50 dollars depending on how far you want the signal strength to carry. The more you spend on one the better.
yes, if the receiving router has a "bridge mode" available. With this mode a wireless router can mirror data received from a far away router to the local area covered by it
it might be password protected to keep other people from using it or you are to far away from the signal to use it
It's better to put it on open place far from metal walls and grids. Usual walls are not a problem for signal.