How can I set the RowSource property of MDB?

In the post below, the guy listed RowSource and RowSourceType as properties of an Access column.

http://www.experts-exchange.com/Data..._10310950.html

But, when I run the same loop over column's properties, I only get 15 properties. (and rowsource and rowsourcetype aren't in that collection).

I'm wondering if its my connection string or driver? I'm using ADOX 2.7

Code:

---


        'recordset and connection variables
        Dim Cnxn As ADODB.Connection
        ' Open a connection
        Cnxn = New ADODB.Connection()
        Dim strCnxn As String =
                      "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="
                      & mdbfile & ";"
        Cnxn.Open(strCnxn)

        Dim cat As New ADOX.Catalog()
        'Create new access database
        cat.ActiveConnection = Cnxn

        Dim tbl As ADOX.Table
        tbl = cat.Tables(tablename)

        Dim col As ADOX.Column
        col = tbl.Columns(fieldname)

        Dim i As Integer
        For i = 0 To col.Properties.Count - 1
            Debug.WriteLine(col.Properties(i).Name & " = " &
                                  CStr(col.Properties(i).Value))
        Next

---

that returns

Code:

---

Autoincrement = False
Default =
Description = Unit of measure for the area. 
Nullable = False
Fixed Length = False
Seed = 1
Increment = 1
Jet OLEDB:Column Validation Text =
Jet OLEDB:Column Validation Rule =
Jet OLEDB:IISAM Not Last Column = False
Jet OLEDB:AutoGenerate = False
Jet OLEDB:One BLOB per Page = False
Jet OLEDB:Compressed UNICODE Strings = True
Jet OLEDB:Allow Zero Length = True
Jet OLEDB:Hyperlink = False

---

thanks,