Probably too late now, but...
I'm assuming you closed without saving, ignoring the "Do You Want To Save?" question, rather than crashing. That actually makes it a bit harder. A crashed Word program, like Robert points out, leaves temp files behind in the original directory that can sometimes be helpful.
Closing the file formally erases these temp files, but if you have erased file recovery methods, you might be able to fish them up if you haven't overwritten them with something else. I have Norton, which protects erased files for a while in case I screw up.