How do I access my earthlink email address list from my IPad?
I can receive emails, but when I go to send a email my contact list is empty.
Do I need to import my list from earthlink web mail ?
Yes you need to import the contacts. You can sync contacts within the Info Tab in iTunes when you sync from a supported address book on you computer. If your contacts are in your webmail address book you will have to export them to your computer - in whatever manner earthlink allows you to do that - then import them into an address book that iTunes can sync to within iTunes.
Read this support article for more information.