Reverting Back to Default Settings

[Richie Gardenhire]

I know this is a drastic measure, and I have been hesitating to ask  
this, but how can one reset VoiceOver default values in Leopard?  In  
Tiger, you had a Reset Defaults Button, but you don't have one in  
Leopard; at least, I didn't see one.  Thanks.  Richie Gardenhire,  
Anchorage, Alaska.