How to open a PRN file in Office/Word 2010

Hello,

How do you open a PRN file to see how it converted? I only want to open the document to see how it converted, not print it. I used Windows XP and Microsoft Word 2003 and would create a PRN file by PRINT TO FILE/GENERIC-TEXT ONLY Printer. Then I would open the document in Word 2003 and could see how the document converted. I bought a new computer with Windows 7x64 bit and Microsoft Office 2010 and now when I follow the same steps to create a PRN file I cannot open the document in Word 2010 to see the converted document. Please provided step-by-step instructions if there are any suggestions/solutions.