First, export information from your Palm Desktop.

1. Open Palm Desktop version 2.0 or greater.
2. Go to the Contacts view.
3. Choose a single contact…or more than one. To select multiple contacts, hold down the Ctrl key and click the contacts you'd like to add.
4. From the File menu, select "Export vCard".
5. Click "OK".

Now import this .vcf file into your Yahoo! Address Book:

1. Open your Yahoo! Address Book and click "Import/Export" in the upper-right corner.
2. In the Import section, select "vCard (.vcf file)" from the pull-down menu.
3. Use the "Browse" button to find the .vcf file you exported from Palm Desktop.
4. Press the "Import Now" button. That's it! Done.

Please see the System and Software Requirements for Import/Export.