O.k., it's late and I simply cannot remember how to set this up
correctly...I've got a form (Applicants) with a button that opens another
form (References) to the linked records on the Applicants form--did that part
with no problem.  However the linked field doesn't auto-populate if there are
no records in the References table corresponding to the Applicant table.  
What, o, what piece of code do I need to be able to enter records into the
References form when there are no previous records with the Applicant ID in
the Reference form/table?

Hope that made sense--just in case, I put the code I'm using below:

Private Sub btnOPenfrmReference_Click()
On Error GoTo Err_btnOPenfrmReference_Click

   Dim stDocName As String
   Dim stLinkCriteria As String

   stDocName = "frmReference"
   
   stLinkCriteria = "[RefPos]=" & Me![sfmPos]![PosID]
   DoCmd.OpenForm stDocName, , , stLinkCriteria

Exit_btnOPenfrmReference_Click:
   Exit Sub

Err_btnOPenfrmReference_Click:
   MsgBox Err.Description
   Resume Exit_btnOPenfrmReference_Click
   
End Sub