Russ,

>I am trying to add a column to mmDataGridView of type DataGridViewComboBoxColumn. Ideally, I would like to populate the comboBox with a list of values from a second DataTable in the DataSet. I was unable to find any samples or instructions how to accomplish in the MM.Net Developers Guide.
>
>Any direction on where to research is appreciated,

This is not an MM .NET combo box control, so you need to bind it manually. Check out the section in this .NET help topic for info on binding to DataGridViewComboBoxColumn:

http://msdn2.microsoft.com/en-us/library/bxt3k60s.aspx

Best Regards,