Import Commissions with Data Import Wizard
Data Import Wizard is an included tool existing within your current Production or Sandbox Salesforce.com environment.
The Data Import Wizard makes it easy to import data for many standard Salesforce objects, including accounts, contacts, leads, solutions, campaign members, and person accounts. You can also import data for custom objects. You can import up to 50,000 records at a time.
Information on how to use the Data Import Wizard can be found here.
To use Data Import Wizard follow these steps.
Go to Set Up. In the Quickfind box type "Data Import Wizard". You'll see something like the graphic below. Click the Data Import Wizard link.
You'll see a screen that looks like the following. Click the "Launch Wizard" button to begin the import.