So, how do you easily put your files in the spreadsheet? It will be hard if you don't have a spreadsheet software so i advise you to get openoffice.
Now, if you have Excell its easy: Open your txt file on excell and select the symbol "=" for your column separator. This will basicaly separate your displayname and your "translation",
Order your new sheet alphabeticly.
Copy and paste both columns into my sheet between the XX_EN and TRANSLATION columns.