Noosh supports CSV import of contacts from Outlook using the default outlook format. Not all fields of the outlook format need to be populated for the import. Only the first name, last name and e-mail address are required fields.
Please see Microsoft document on how to export contacts from Outlook at http://office.microsoft.com/en-us/outlook-help/export-contacts-HA101870639.aspx
If using your own data, please use the attached csv template to upload contacts.