I'm just starting to use MM and am trying to follow the "jump start" documentation to set up business classes (C#) for accessing the Northwind data. But I get a error on "DataSet" - "Expected class...". I must have forgotten something in the setup, but I have no idea where to look. Thanks!

For example:

using System;
using System.Data;
using OakLeaf.MM.Main.Business;

namespace Chesapeake.Northwind.Business
{
public class Shippers : ABusinessObject
{
public Shippers()
{
this.TableName = "Shippers";
this.PrimaryKey = "ShipperID";
}
}
public DataSet GetAllShippers()
{
return this.GetDataSet("SELECT * FROM Shippers");
}

}