Windows Vista CD (Copy)

Hello all,
I was wondering something. I needed to know where can I get the torrent or the file to burn a legit copy of Microsoft Windows Vista?? I know it is possible because I saw this guy have a copy of the XP Cd. He wouldn't tell me how he got it because he worked at a computer repair shop (i'm guessing he would lose buisiness) if anyone knows where I can get the file, let me know. Thanks!