You can import contact lists and address books that are saved in a comma-separated (.csv) text file format.
Go to Preferences> Address Book.
In the Import/Export area click Browse. The File Upload dialog displays. Browse to locate the .csv file.
Select the .csv file, click Open.
Click Import .CSV File. Choose the address book to import into or create a new address book.
Klikni "OK" (DA). Depending on the size of the .csv file, import may take a few minutes.
When Import is complete, the Status Box shows the number of contacts successfully imported. Contacts are in alphabetized by last name.