text: how do u open a data file to be able to read it ?   if it's binary, the best you can do is use a binary file reader that turns the binary into hexadecimal.  even then it may not make sense.  if it's ascii text just use notepad or wordpad if you are using windows.  edit: try it in wordpad first, if you can read it - cool - if it's just a bunch of crazy symbols - it's binary.