Excel 2007 VBA update Access 2007 date field

I have an access database table with a date field among about 50 other fields.  When the entire record is originally created, this particular date field may or may not be entered.  Subsequently, I will need to update this field with a date.  When I do this from Excel VBA, for example, trying to update with 3/13/2012, the field is populated with 12/29/1899 every time.  If I run the query from inside Access, the field populates correctly.  My VBA code is below:

Sub UpdateCDRBPCD()

    Dim DBConnection1 As New ADODB.Connection
    Dim rgInput As Range
    Dim rgInputCell As Range
    Dim rowCounter As Long
    Dim intCounter As Integer
    Dim intDealno As Integer
    Dim SQL1 As String
    Dim EnrollFTDT As String
    Dim FolderLoc As String
    
    FolderLoc = Sheets("Conversion").Range("F4")
        
    Sheets("BPCD").Select

    DBConnection1.Provider = "Microsoft Jet 4.0 OLE DB Provider"
    DBConnection1.Properties("Jet OLEDB:System database") = "" & FolderLoc & "\Security.mdw"
    DBConnection1.ConnectionString = "Data Source=" & FolderLoc & "\MMCD.mdb;User ID=user1;Password=password1;"
    DBConnection1.Open

    rowCounter = 5
    Do While Cells(rowCounter, 2) <> ""
        rowCounter = rowCounter + 1
    Loop
    
    Set rgInput = Range(Cells(5, 2), Cells(rowCounter - 1, 2))
    
        intCounter = 0

    For Each rgInputCell In rgInput
    
    If Sheets("BPCD").Range("AU5").Offset(intCounter, 0) = "No" Then
    
    Else
         
    EnrollFTDT = Format$(Sheets("BPCD").Range("AK5").Offset(intCounter, 0), "mm/dd/yyyy")
    intDealno = Sheets("BPCD").Range("H5").Offset(intCounter, 0)
            
    SQL1 = "UPDATE MMCD SET Enrollment_File_Transfer = #" & EnrollFTDT & "# and Update_UserID = 'updateuser' where [PPT #] = " & intDealno & ""
        
    DBConnection1.Execute SQL1
    
    End If
    
         intCounter = intCounter + 1
    
    Next rgInputCell
    
    DBConnection1.Close
    
End Sub

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