Elevation Property [Excel 2003 VBA Language Reference]
Returns or sets the elevation of the 3-D chart view, in degrees. Read/write Long.
The chart elevation is the height at which you view the chart, in degrees. The default is 15 for most chart types. The value of this property must be between -90 and 90, except for 3-D bar charts, where it must be between 0 and 44.
This example sets the chart elevation of Chart1 to 34 degrees. The example should be run on a 3-D chart (the Elevation property fails on 2-D charts).
Charts("Chart1").Elevation = 34