Change the Sound for Messages Arriving in Inbox in Microsoft Outlook
Outlook
Close Outlook.
Windows XP
Close Outlook.
Start Settings Control Panel, click Sounds, Speech, and Audio Devices, and then Sounds and Audio Devices. Click the Sounds tab.
Under Program Events, under Windows, select New Mail Notification. Click Browse, and then select a new .wav audio file. Click OK.
Restart Outlook.
Windows 2000
Close Outlook.
Start Settings Control Panel, double-click Sounds and Multimedia.
On the Sounds tab, under Sound Events, under Windows, select New Mail Notification.
Click Browse, and then select a new .wav audio file. Click OK.
Restart Outlook.