Yup. It ain't MV7. I got rid of it and did a registry clean and everything. The beep is still there. This seems more like a Vista problem to me.
EDIT: After I did some googling, I found out it is a flaw in vista. Refer to these links.
http://channel9.msdn.com/forums/Coffeeh ... -the-Ding/http://support.microsoft.com/kb/KB944150I THINK these solutions might do the trick.
Method 1: Change the system sound to a silent .wav file
1. Click the Start button, type Sound in the Start Search box, and then click Sound in the Programs list.
2. Click the Sounds tab.
3. In the Program list, click Select.
4. In the Sounds list, click to select a silent .wav file, and then click OK. If you do not have a silent .wav file, use the Sound Recorder application to record one. To do this, follow these steps:
a. Click Start, click All Programs, click Accessories, and then click Sound Recorder.
b. Click Start Recording.
c. Click Stop Recording.
d. Save the file to your computer.
Back to the top
Method 2: Delete the .Current registry subkey
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
1. Click the Start button, type regedit in the Start Search box, and then click regedit in the Programs list.
User Access Control permission If you are prompted for an administrator password or for confirmation, type the password, or click Continue.
2. Locate the following registry subkey:
HKEY_CURRENT_USER\AppEvents\Schemes\Apps\.Default\CCSelect\.Current
3. Right-click .Current, and then click Delete.
4. When you are prompted to delete this registry subkey, click Yes to delete the subkey.
5. Exit Registry Editor.
For future reference, you might want to keep the sound setting changing to a minimum otherwise it will occur again.
I hope it doesn't happen again when Microsoft releases Windows 7. 
