Selecting a Messaging Service

Windows Messenger uses different services to exchange messages, files, and other information. The default service is .NET Messenger Service, which individuals mostly use. For those working in a corporation, Windows Messenger also supports Communications Service for networks that use SIP-server technology, and Exchange Instant Messaging for networks that use Microsoft Exchange Server. You can set up Windows Messenger to access more than one type of messaging service. However, you need to specify which service starts first when you start Windows Messenger.

Select a Messaging Service

Click the Tools menu, and then click Options.

Click the Accounts tab.

Select the option with the primary account in which you want to sign in.

If you want, select the check box of another messaging service, and then include sign-in information.

Click OK.