When to use SET keyword with NEW?

[machine_wars]

What is the correct way to use SET and NEW? When I declare a NEW ADODB.RecordSet ex. Set rs = New ADODB.Recordset I know I have to use the NEW keyword but what about when I use Dim itemX As ListItem, why don't I hae to use NEW here as well ex. Set itemX = ListView1.ListItems.Add(, , rs.Fields(0), , 1).