Identify "parent rows" in a grouped structure
 

I am writing code to load data from Excel into an Access table.

Data is structured in a nested form with group headings and a number of rows
making up this particular group total.

When loading tha data I would like to identify all my rows of - say - "level
1" and then load the related records from level 2.

How do I identify the "level 1" and "level 2" rows through VBA (the object
model)?
--
Diane