yes
Any high speed internet would work.
The old xbox and new xbox have more or less the same system, so it should work.
it depends on what games console you've got it for it wont work on the psp or the ps2 but some do on the xbox 360
My OS is Win 7 64bit and when I play NFS Underground 2, SPEED.EXE sometimes stops work, how can I fix it?
no they have different disk rotation speed and different hardware requirements
yes you can you need to for it to work
You dont need to... It should work already.
Yes you just need to plug them into your controller and you need xbox live :D
If you have AT&T's high speed Internet service, yes.
yes you need the new version of the xbox for the kinect to work
Although you do not need an HDTV for an Xbox360 to work you will need an HDTV to be able to get the most resolution out of your Xbox