Hi CherryBomb,
When you link to the second form, you can use the docmd.openform and pass arguments to it.
DoCmd.OpenForm "Rates" , AcNormal,,"[Supplier_ID] = " & me.Supplier_Id
[Supplier_ID] is the ID on the 'Rates' Form
me.Supplier_Id is the ID on the first form.
Does that help at all?
Rich