Joe,
You're not getting many takers on this question, are you? <g>
Personally, I'm not crazy about Radio Buttons in .NET (and haven't really used them). I think though, in your case, this really should be done with a CheckBox. Either way, you can't really bind to the control because of it being a string field. If I were doing this I would either mess with setting the .Checked property of a CheckBox depending on "Y" or "N", or add a boolean field to the DataTable, set it accordingly and bind to that.
~~Bonnie
>I have 2 RadioButtons (inside a Group Box).
>One button is for Yes and the other button is for No.
>How might I bind these to a SQL Server Char(1) field having values of 'Y' and 'N'?