DisplayScreenTips Property
From Microsoft Office Web Components Object Model
DisplayScreenTips Property
Returns or sets whether ScreenTips are displayed. Set this property to False to prevent the display of ScreenTips. The default value is True. Read/write Boolean.
expression.DisplayScreenTips
expression Required. An expression that returns a PivotTable or ChartSpace object.
Example
This example disables ScreenTips for PivotTable1.
PivotTable1.DisplayScreenTips = False