Note: These procedures only apply if you have installed Outlook with the Corporate or Workgroup(CW) option. This option allows you to use Messaging Application Programming Interface (MAPI) services.
To determine your installation type, on the Help Menu click About Microsoft Outlook. In About Microsoft Outlook you should see "Corporate or Workgroup" if you have the Corporate or Workgroup installation.

In Outlook 2000, information services enable you to control how e-mail systems address and deliver your messages, as well as how your messages and folders are stored. This following describes the information services that are available with Outlook, and how to add them to your user profile.
Before you can use an information service, you must add it to your user profile.

You can have multiple information services in a user profile. For example, you can have multiple sets of personal folders (.pst) files in a single profile, and you can have Internet E-mail and Exchange Server in the same profile. However, you cannot always have two of the same e-mail services in a profile, for example, two Exchange Server services. Personal folders (.pst) files and Internet e-mail are the exception.
If the service does not allow a duplicate in your profile, for example the Exchange Server service, when you try to add the second copy of the service ,you may receive the following error message:

Outlook can only support one Exchange Server account at one time and you already have one setup.

The complete Outlook feature set is available with Exchange Server, which supports a server-based message store, message transport, and global address book. In the Corporate Workgroup configuration, Outlook offers advanced e-mail features, group scheduling, personal information management, document explorer, and custom groupware applications.

NOTE: The Exchange Server service is included with Outlook, but users must acquire an Exchange Server client access license separately.

NOTE: It is not a recommended practice to include the Internet email service in the same mail profile as the Exchange Server service. For additional information about this, click the article number below to view the article in the Microsoft Knowledge Base: 245446 XCLN: Exchange and Internet E-mail Services in Same Profile Internet E-mail

With the Internet e-mail service, Outlook functions as a full- featured e-mail client integrated with desktop information management and the Outlook document explorer. You store messages locally in a .pst file, and remotely connect to and download messages from an Internet e-mail service provider (ISP).
You can store e-mail addresses in the Outlook Contacts folder or a Personal Address Book.

If you use the Microsoft Mail service, you store messages locally in a personal folders (.pst) file, but work connected primarily through the Local Area Network (LAN) to a postoffice. The postoffice provides the messaging transport and central address book or e-mail directory. In this configuration, Outlook functions as a full-featured e-mail client integrated with basic group scheduling, for example, sending and receiving meeting requests, personal information management, and the Outlook document explorer.

Use the following steps to add an information service to a user profile:

1. On the Tools menu, click Services,
2. Click Add.
3. In Available Information Services, click to select the information service that you want to add,
4. Click OK.
5. Follow the prompts for adding specific information for the Information service that you selected. If the information service you need is not in the list, you may need to install it separately.

The following are the additional information services.

• Outlook Address Book
  The Outlook Address Book is created from contacts in your Contacts folder and includes an entry in the E-mail field or a Fax telephone number field, and you can have multiple e-mail addresses for each contact. When you update your contacts in the Contacts folder, the Outlook Address Book is updated at the same time. The Contacts folder appears as a separate entry under Outlook Address Book. A new feature in Outlook 2000 allows you to create distribution lists from your contacts.
  To do this,
  1. Open your Contacts folder, and then
  2. Click new Distribution List on the Actions menu.
• Personal Address Book
  A Personal Address Book is best used to store personal distribution lists that you frequently address messages to, such as a list of everyone on the racquetball team. If you use Exchange Server, you can also add an address for a public folder to the Personal Address Book. Personal Address Book files have a .pab extension, and can be stored on a disk.

  NOTE: The ability to create a Distribution List in your contacts may eliminate the need for a Personal Address Book.

• Personal Folders (.pst) Files
  Personal folders (.pst) files are folders that you create to store messages on your hard disk, or on another server. You add a main personal folders (.pst) file as a service to the user profile, and give it a file name. Personal folders (.pst) files have a .pst extension.

The information in this article applies to:

• Microsoft Outlook 2000