>Anyone seen a grid control that can handle 3 or 4 dimensions?

Tim,
You mean display hierarchical cursors in one grid ? You can do that with :
-Native VFP grid having subgrids in cells (not so easy honestly)
-MS Hierarchical Flexgrid Activex control (likely this one)
-Excel Pivot table (a good multidimension model)
-SQL server cubes might be an expensive alternative.

Probably we'll include Flexgrid samples in foxyclasses' next update. IMHO it's nice to provide treeview grids with that.
Cetin