Npgsql connection string editor?

Greetings!

I have found references on the Internet to a connection string designer for npgsql, but I haven't found where to get it.  I don't seem to have it with my download of npgsq. Or am I just looking in the wrong place?

For example, http://npgsql.projects.postgresql.org/exampleprograms.html , which is from the main npgsql web site, contains the following:

public void ConnectToData()
    {
        string DSN;
        Npgsql.Design.ConnectionStringEditorForm Ndesign = new Npgsql.Design.ConnectionStringEditorForm();
        Ndesign.ShowDialog();
        DSN = Ndesign.ConnectionString.ToString();
        if (DSN == "")
            return;

        conn = new NpgsqlConnection(DSN);
        dset = new DataSet("npdata");
        NpAdapter = new NpgsqlDataAdapter();
        NpAdapter.SelectCommand = new NpgsqlCommand(query, conn);
        NpAdapter.Fill(dset, "npdata");
        dtsource = dset.Tables["npdata"];

        deleteCmd();
        updateCmd();
        insertCmd();
    }

How can I get ConnectionStringEditorForm?

RobR