Missing "on-line" icon in Systm tray

The 2 little computers symbol which indicates whether the PC is on line have disappeared from the system tray of a friend’s PC. As a result she finds it difficult to know whether her dial-up connection is active or not, and it is also not easy to disconnect it. Anyone know how to get it back?

I tried a right click on the system tray and then looking in Properties, but it's not there.

It's a standard Window XP PC, about 2 years old

 

Try these Troubleshooters:
http://www.michna.com/kb/WxSystray.htm

http://support.microsoft.com/?id=825826

 

If it is a microsoft broadband adapter then put msbntray.exe into your startup folder.

 

Thanks all. I'll try these when I see her next and let you know