You have to choose the option to display the icons in the Notification Area. This option should be in the settings for your antivirus program. To add the sound icon to the notification area:
1. Open Control Panel
2. If you are using Windows XP, select Switch to Classic View
3. Open the sounds and multimedia applet
4. Select the Show Volume Control check box
5. Select Apply and OK
If you cleared the check boxes for the programs in MSCONFIG and then selected the check boxes in MSCONFIG, you might now have to disable and enable the show icon in Notification Area option for each program.