well first need to create a dynamic array and make sure its correct your parent ID field should be linked to your parent recordset. the child ID field should also be present in the child ID field and the text as well should come from the parent field. next click on your menu and select behaviors (not server behaviors) and choose populate list from array. Array source should be the parent record set next source list would be the menu and target list should be the next menu that you want populate i.e country.
hmm not sure if that made sense maybe Ray could clarify or just check out the post he helped me with here showthread.php?t=1352