datagridviewcheckboxcolumn in windows xp media center edition.

Question

hi.

In .net 2005,
In a windows application,
i have added a checbox column to the datagridview using the following code,
       DatagridviewCheckboxColumn dcCheckbox = new DatagridviewCheckboxColumn();
       datagrid.columns.add(dcCheckbox);
The above code works fine in windows xp, 2000.
but in client's system he the checkbox column is not visible. he is using windows xp media center edition..

if any one knows, please help me.....

thank you!