Take a look at the following article:
http://tinyurl.com/ga82

>How do i create a new instance of a typed dataset that is auto-generated from a xsd file.
>
>Product ds = new Product(); // dataset
>
>This will cause the error:
>The type or namespace name 'ProductDataset' could not be found (are you missing a using directive or an assembly reference?)
>
>The .NET namespace is set to the project name by default. For example, if I have a product.xsd in MySolution --> the product.cs namespace is set to MySolution but I want it to be set to MyCompany.Product.
>
>
>TIA, John