sorry for the WNR2000v3
you ether need a Nintendo wifi usb connector or a wireless router.
Nintendo wifi is a free service to all wii and ds users all though it depends on what kind of internet you have if you don't have internet that can support Nintendo wifi you will need to purchase a wifi adapter.
WiFi usb adapter is a WiFi card.
You need pay only for the adapter. If you have a wireless router you will not have to pay to anybody for your WiFi. But you still have to for Internet.
You need a wifi router or a Nintendo wifi usb
Yes, you need the Nintendo DS WiFi USB adaptor to access the internet.
Wireless adapters (USB or not) are good for connecting to wireless networks (aka WLAN or WiFi).
No, as long as your Nintendo DS can pickup a wireless connection, you can still connect to Nintendo WFC.
Yes you can. If you want to play it with friends some wifi would help but i dont think you need that to play with friends.
No, you need to buy a wireless USB adapter to use wifi on a Presario.
You don't. If you have the new Xbox 360, you don't need a wireless adapter because it has built in wifi. But if you have any other Xbox 360 console then you will need a wireless adapter.
You need a Wifi Connection or Wireless Connection just like a Nintendo Wii