E EmptyNest Administrator Dec 16, 2011 #1 If you come upon a file extension you don't know, the endlessly useful Wolfram Alpha has a tool built-in that will tell you what it is and what programs you'll need to open it. More »
If you come upon a file extension you don't know, the endlessly useful Wolfram Alpha has a tool built-in that will tell you what it is and what programs you'll need to open it. More »
