>I need to have VFP run the WSH Sleep method (rather than having VFP call the Win32 API Sleep directly). I can get WSH to activate an application and send key strokes to the app. But I can't figure out how to call the WSH Sleep method.

You cannot. See mskb #279164 Certain WScript methods and properties not accessible in Visual Basic.
What's wrong with the Win32 API Sleep ?