How do I control the column types generated when I connect a DataTable to a DataGridView

I have a MyDataType object being returned as part of a datatable.  I have a MyDataTypeColumn type that will display both a string and image value from MyDataType (like the name column in explorer details view).

When I put the DataTable in as my DataGridView's DataSource it creates a DataGridViewTextBox column and populates it with the result of MyDataType.ToString() which isn't acceptable.  

How can I either force the autogenerated column to be a MyDataTypeColumn; or the DGV to use predefined columns instead of simply inserting new ones to the right of the existing ones when loading from its DataSource?

MyDataTable.Columns.Add("Symbol", typeof(MyDataType)); 

//finish creating columns and loading data.  This is all manual since my data isn't coming out of a database.

MyDataGridView.DataSource = MyDataTable;