NO it does not
No it does not when you buy it in the arcade pack but, it does have a port on the side where you can plug it into.
i think it does because the arcade has no hardrive with it.
Yes if you have a storage device, i.e a Memory Card or Hardrive.
yes the big difference between arcade and elite is memory
Yes it can you.
The Xbox 360 Arcade can play the Original Xbox games. Where the newer Xbox 360 can not. On the Arcade you can also download other old games. But sometimes you can do that on the other system.
Yes, you can play regular xbox 360 games on an arcade unit. The difference in between the arcade unit and the pro system is the pro system comes with a hard drive to save game data/videos/etc.
$200 for Xbox 360, $400 for Xbox 360 Elite
It doesnt have gigs, it has a 256 mega bite memory core although you can buy a hardrive for it.
no the hardrive you plug into your xbox 360 can only be used to play music, films and pictures from the hardrive on your xbox 360 you can not play any games nor store any xbox 360 data on the hardrive.
Yes you can.