Change whole row's celltemplate

EDIT: forgot to specify in title, vb.net 2008

Ok so currently I have a dataGridView which contains columns, some of which are image columns and the rest text box columns, and my question is how do I change the first row in my dataGridView to be all text box during runtime. I am making a small csv editing too and I want users to be able to edit the column headers so I am moving them down to be normal cells (as I have already done with the row headers) thus allowing the users to edit them (if there is a way to let users edit row and column headers then this would fix my problem also.

Thanks for any help will rep the solution (unless it's jmcihinnily as I have repped him too many times in a row :D )

You need to create new DataGridViewTextBoxCell objects and assign them to the items of the row's Cells collection.