Go to your Panda Nation Center. Click on the add contacts link to the left of the page. You will be taken to your page where you can view, manage and upload friends e-mail addresses. Click on the Add Contacts button on the left to import contacts from address books.
Select the e-mail provider from the drop down menu on the right and upload your .csv file to add contacts. Click Online Import to directly access your address book of your e-mail service provide. Click on the Add Contacts button to manually add e-mail addresses. Don't forget to click the save button before leaving the page.