You can, but it requires either a pay to use service or a lot of technical know-how, but it is also illegal.
Illegally.
Depends on the game. Some xbox games are available for download through the xbox marketplace.
Yes, a person can download games on the Xbox with Wi-Fi. This is done by using points to purchase games through the Xbox store. Internet use is required.
No you cannot download games on the original Xbox.
If auto download is selected the Xbox 360 will download games whenever there are games available for download. This feature can be turned on in the Xbox system settings.
You are download Xbox 360 games on your computer yes but its illegal.
xbox live.
Yes.
To download arcade games you need xbox live, but all you need is a silver membership which is free.
Yes you can
Yes.
no use of doing this its better to mode the xbox 360 and download games in your hardisk it will take around 7GB