If you're starting with your own file, you can convert it to a CSV file for importing. Note that your columns must still match our template file's structure and ordering in order for the system to accept your file.
You can convert an Excel worksheet to a CSV file by using the Save As command.
Click the File tab, and then click Save As.
The Save As dialog box appears.
In the Save as type box, choose the CSV (Comma delimited) file format for the worksheet.
Browse to the location where you want to save the new text file, and then click Save.
A dialog box appears, reminding you that only the current worksheet will be saved to the new file. Click OK. You can save other worksheets as separate text files by repeating this procedure for each worksheet.
A second dialog box appears, reminding you that your worksheet may contain features that are not supported by text file formats. Click Yes.