Windows Live Messenger
Windows Live Messenger, shown in Figure 4, is the latest iteration of Microsoft's instant messaging program. As you can see in Figure 4, Live Messenger offers all the basic one-on-one text messaging features you've come to expect, functioning over the Windows Messenger network. You can even make VoIP phone calls to any of your Messenger contacts, using the Windows Live Call service.
Figure 4 Instant messaging with Windows Live Messenger