|Open up the Settings Application and click on "Mail, Contacts, Calendars".|And then choose Microsoft Exchange:
Choose Add Account.
Put in your Margaritaville email address and then inh\username. Your username is the first part of your email address before the @ sign. Press Next and the iPhone will configure your Exchange account automatically.
Press Next again and you select what you would like to synchronize with Exchange:
Set the options, press Save, and your iPhone will be setup for Margaritaville Exchange.