How do you use the SQLDataSource object in the VB code behind module?

I am trying to upgrade a website from Visual Studio 2003 to VS 2005, taking advantage of some of the new controls and features available.  In the VS 2003 version, I am accessing data in the VB code using a connection object.  In the VB 2005 version, I would like to create an SQLDataSource object in design view.  My question is, how do I get a look at the data in the VB code behind module in order to code against it?  

For exampe, I have the following code in my Visual Basic code behid module:
Dim conn As OleDbConnection = New OleDbConnection(System.Configuration.ConfigurationManager.AppSettings("ConnectionString"))
Dim cmd As New OleDbCommand(loginSQL, conn)
Dim dbReader As OleDbDataReader
conn.Open()

Try
   dbReader = cmd.ExecuteReader()

   If dbReader.Read Then
      If (dbReader.GetBoolean(dbReader.GetOrdinal("Hide"))) Then
         lblErrorMsg.Text = "Your EC3 account has been deactivated.  Please see your EC3 administrator."
         lblErrorMsg.Visible = True
         Exit Sub
      End If
      Session("SSN") = (dbReader.GetString(dbReader.GetOrdinal("Social Security Number")))
      Session("UserName") = (dbReader.GetString(dbReader.GetOrdinal("Full Name")))
      Session("Security") = (dbReader.GetString(dbReader.GetOrdinal("Security")))
      Session("Access") = (dbReader.GetBoolean(dbReader.GetOrdinal("All Consumers")))
     dbReader.Close()
      conn.Close()
      checkPrefs()
      blErrorMsg.Visible = False
      Response.Redirect("testform.aspx")
Else
   lblErrorMsg.Text = "User Name and/or Password invalid."
   lblErrorMsg.Visible = True
   dbReader.Close()
   conn.Close()
End If
Finally
   conn.Close()
End Try

How can I do this using the SQLDataSource I have set up to execute the SQL?