yes it does not matter what kind of interface you use for connecting to PC that usb card implements a wifi and every wifi router standards based of course must work
N adapter should work with G router but you probably won't gain any speed. Both ends need to be N, I think -- and preferably from the same brand.
Any wireless router can work on the Xbox 360 yes. A wireless plug in adapter can work.
They are all the same price. Do not get any third party wireless adapters because they are not as good.
Apple's equipment will work with any router that conforms to wireless network standards which is called 802.11.
The classic WRT54GL will indeed work with any Internet service provider, as will any router.
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.
Yes, If you have a Modem
Yes, you can definitely work in any room in the house if you have a wireless router. You can move that laptop all over the house and keep a strong signal.
As far as your xbox has a wireless adapter and your router is configured properly you should not have any problems.
No any router will work, get something like a belkin or cisco systems router, works on the same 802.11 b/g/n system.
Its not called a DSi router its any old router I got one for my DSi But i recommend getting a linksys G wireless router they work good
Nowadays virtually any wireless router. When you get a router you usually have about 4 lan ports (switch) and wireless router in the same box.