Radio Button inside a XamDataGrid

Hi Infragastics Team,

I am trying to have set of radio buttons inside a xamdatagrid. But the problem is that I am binding xamdatagrid to Dataset. I did not find much resources. 

I am attaching my sample example(which has checkbox, Not Radio Button). Please specify how can i add the Radio Button in the xamdatagrid. Also How to have space between two tables in the xamdatagrid, Since my Dataset may have upto 10 tables.

Thanks AKshayC#.zip