i dont know man
Usually, buying a phone outside of Sprint for Sprint is difficult since it doesn't use SIM cards. I don't recommend buying phones for Sprint rather buy the phone through Sprint.
Any investment banker or even a broker can provide information on Sprint stock. From trading to buying these folks would be your expert in Sprint stocks.
There is only one way, short of buying a brand new phone, to reset or change the Sprint voicemail password. You have to go to the Sprint official website.
Most wireless cards support Wireless-N these days, but make sure you're buying Draft 2.0 N cards.
Sprint International rates can be found on the Sprint website. Usually buying a calling card is your best bet though because most international calls are fairly expensive.
Yes, a wireless n adapter is backwards compatible with wireless g. Check the box you are buying and it will tell you if it is compatible with which wireless ranges.
3xwpActivating it
Sprint telephones are not the cheapest telephone option. Many companies offer promotions and discounts in order to get more business. It is best to shop around before buying a phone.
"You can purchase a wireless network card at any Staples store. And as Staples has many locations and a website, buying the wireless network card should be easy through them."
Buying from people instead of companies
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/
You need a wireless hotspot. You can find one at Starbucks. I suggest buying a hotspot detector and playing where it finds one.