Ion, All BitTorrent does to the file is redistributes the cost of the uplaod to the downloaders. It does not change the file in any way. When a file is made available using HTTP, all upload cost is placed on the hosting machine. With BitTorrent, when multiple people are downloading the same file at the same time, they upload pieces of the file to each other. This redistributes the bandwidth and the cost of upload to the downloaders. So the file format will not be at all changed. If it was PAL to start with, its going to be PAL when you get it. If it is PAL you could burn it to DVD, but it would be unplayable in most DVD players in this country. What you could do is render the file from MPEG or AVI to raw video in a video editing program such as adobe premiere or final cut pro. Then you could burn it onto a DVD in NTSC with region 1 coding.
Mark