Versioning a DataSet

Hi,

I have a DataSet defined in Visual Studio 2008 with an XSD file. The
contents are saved to an XML file using DataTable.WriteXml() and read back
using DataTable.ReadXml().

Now I am going to have to modify the schema. Specifically I want to replace
a boolean field with a (tristate) enumeration. Alternativly, I could leave
the existing field and add an additional field.

I will want to read files written with the old schema, but will only write
the new schema.

I have been looking for recommended practices for handling this kind of
problem. Although I have found general information about VSD versioning, I
have not found any information that relates to the use of DataSets in Visual
Studio 2008.

What would be the best practice to handle this case?

Thanks in advance
Phil

re: Versioning a DataSet

I should add that I am using a strongly typed DataSet.
Phil