Update a single row in database

[Mark@SF]

My dB table ("Tasks") has a nested relationship to itself. The table has a PrimaryKey ("RecID") and a ForeignKey ("ParentID").

For example, I add 3 records to the Tasks DataTable (father, son, and grandson Tasks). Then I call the daTasks.Update method and pass it the Tasks DataTable.

'...only updates the "father" task in a "father-son-grandson" set of tasks (i.e., iTasks = 1)
iTasks = daTasks.Update(dsMain.Tables("Tasks"))

Is my only option to use an "INSERT INTO..." SQL command to add each of these records, one-by-one, starting with the "father", then the "son", and finally the "grandson" Task?