Hi Pete,
To unfreeze the row header, you could try hiding the Row header and set the CellType of the first column ( which is scrollable ) to "RowHeader" and make its look and feel similar to Row header.
Here is a sample project
And regarding the issue ''include the row headers..''. Please provide us some more details. As we can able to include the row headers, kindly refer to the above sample for details.
Best regards,
Madhan.