I tried to google "BB light" and only came up with a forum respose with a link to sourceforge.net. When I try to download it asks me for a mirror?? When I unzip the file my PC can't read it...What am I doing wrong, or is there another way to download it?
You probably unzipped a file for the Desktop Manager's Application Loader. Run Desktop Manager with your phone plugged in, then run Application Loader and find that file that you unzipped and Desktop Manager should load it onto your device.