You can download a movie and save it in your videos folder.
In the same way you do when you download movie on your hard drive. Save or Save as... choose folder on your flash drive, press OK.
You do need a hard drive to download expansions, but the system won't turn on if you don't have a hard drive, so if you can turn it on without problems, and can play games then you definitely have a hard drive and you are able to download expansions.
download it to your hard drive, then drag and drop onto the flash drive
Yes, as long the hard disk drive is not NTFS formatted.
As long as the device has enough capacity yes
to your hard drive
to download things on
yeh
is to download some image to your hard drive
No. The Only way to download demo's is to either pay for a brand new Xbox elite for 300$ and make sure it has a flash drive or you could plug a hard drive into the back of your Xbox and the file would be on your hard drive. But you could only play the demo with the hard drive in.
no XD