Sometimes. It depends on the store. Some tell the manufacturer to put it in there along with some other things, and some don't.
Yes
It will if you buy the 100 dollar wireless adapter.
any Xbox360 wireless adapter is $100.00 with tax.
Don't no
The only difference is color, so yes, you can use a regular controller with elite console
Yes
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.
I will make the assumption that you are referring to setting up your XBOX 360 to the internet to take advantage of the LIVE features. Microsoft has yet to sell an XBOX with a wireless adapter pre-installed with the console itself. Instead you must buy an adapter piece for the XBOX. Here are two links for buying the adapters for your console: http://www.amazon.com/Xbox-360-Wireless-Network-Adapter-Networks/dp/B000B6MLV4 http://www.xbox.com/en-US/hardware/x/xbox360wirelessnnetadapter/
Xbox Wireless Network Adapter MN740
The XBox 360 Elite is a game console with wireless controllers. It was launched in August 2007 and later discontinued in June 2010, after a series of price cuts.
Xbox adapters should be sold in any store where the console is sold. This can include Walmart, Future Shop, Best Buy, Even Amazon and Ebay may have a wireless adapter.
Xbox 360 adapter? You can get a Xbox 360 wireless adapter.