In order to set the default folder when you contacts are saved in Microsoft outlook press on the address book icon on the toolbar
From the address book tools menu, select options
From here you can select which address list to show first, where to store addresses and which order to search address books in to look for a contact
To add an address in your outlook contacts folder, right click on the e-mail address and select Add to outlook contacts. This will save the contact card into the address book shown above in Keep personal addresses in