on the use of the datagridview comboboxcolumn in vb.net

Question

I have a dataset with 2 tables. The first table contains some string literals in the first column and in the second column I have numerical code for each of these strings. In the second table I have a column that contains the numerical codes as in the first table. My problem is to have a datagridview that displays the information in table 2 while replacing the numerical codes by their string counterparts. I used a comboboxcolumn and the project generates ok but the comboboxcolumn is empty. I would appreciate any help. Thanks. Tried adding a comboboxcolumn to the datagridview. I suspect I not grasping the meaning of the datapropertyname property.