From The Claxton Group:
ContactGenie MultiPort, contact import or export for Microsoft Outlook 2000/2010. It includes full support for custom forms or fields in PST, exchange mailbox, or exchange public folders. Import to or export from multiple exchange based contact folders, exchange global address users or contacts and global distribution group members. Choose to "Add all", "Add New Only" or "update" pre-existing contacts using one or more user-selected fields as update keys. Standardize primary field formats such as FileAs, EmailDisplayName and FullName. Dynamically create user-defined fields from input data file. Append or replace notes with or without time stamp. Append to or replace keyword field values. Multi-line street address and multi-part phone number support. It includes ability to create multiple templates to save import or export criteria for repeated use. Optionally ignore empty input data fields for updates, and have support for Command line for unattended operation.