If you've encountered a CSV file and you're unsure what they're for, the good news is they're pretty straightforward and easy-to-use with apps you already know.

To import data from a text file into Microsoft Excel, follow this step-by-step guide: First, create a blank spreadsheet in Microsoft Excel and ensure you have the .txt file on your PC.

How to Open Excel 2007 Files As Separate Windows. If you work with multiple Excel files over the course of a workday, and especially if you use a dual-monitor setup, you might wonder how you can ...