Yes it is backwards compatible
For Every Wireless Modem router you need what's called a usb wireless adapter. It will work for every laptop but I'm not sure bout a desktop but buy one that has 2gb or more.
Yes.
Are you asking if the computer will get internet? If so... Yes. as long as the router is connected to a modem via network cable and also connected to the desktop computer via network cable.The computer will not connect to the wireless signal sent out by the router. Without a wireless card, it will only work if it is hard patched via network cable to a working modem. If you are asking if the wireless router will still work, even when its connected to a desktop computer with out a wireless card, the answer is also yes. and i this situation, a wireless card in the computer is completely irrelevant so I'm guessing this is not what you meant.
Yes, it will. It will work with A, B, G, and N standards.
No they do not. They simply have to work on a compatible frequency. Such as wireless a, b, g etc.
A wireless only router sends out a radio signal to all the devices, B, G and N bands. The computer/devices have to have a wirless card/dongle to work though. It only has the one ethernet port for the modem to connect to it.A Wired only router is one that only has ethernet ports connecting it to the computers/devices. There is no radio transmitter in it.Most routers have both now, usually 4 ethernet ports and the wireless radio as one, so you can connect wireless or wired devices to the router at the same time.An example world be my older tower doesn't have a wireless card and I don't want to buy a USB wireless device so I can just use the ethernet cable to connect to the router while my Laptop connects wirelessly.
It means your Netgear wireless router or Netgear wireless card (your computer) are too far from one another for the wireless connection to work.
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
Rather no than yes. It will work if the router is configured to work in the "G" mode.
No, if it's yours or it came with the computer then it stays in your computer. The wireless card is usable in any state in the country. Pretty much most county's. Your thinking too hard. The wireless signal works with any wireless router that is compatible with your card. If you move to another state then it will work with the wireless modem/router the ISP supplies to you when you buy your next internet.
No a WiFi router is required.
No. You need a wireless router, though you don't necessarily need a computer.