Excel – Save an Excel File as a .CSV File (Excel 2010)
You can convert an Excel file into a .CSV file (Comma Separated Value). A .CSV file can be used to transfer data from one program to another. For example, if you have a mailing list in Excel you can covert the file to a .CSV file and use it to upload the information into an e-mail program (Outlook, Gmail, etc.). This video will show you how to covert an Excel file.