>Strange, why wouldn't you be able to add an object to the grid's column? Try to do it programmatically then.
>
>BTW, the error indicates that you were trying to add this checkbox to the grid itself, not the column. I'm not sure how does it happen. Try to do it again...

Okay, finally got the textbox in there, by having the class it was in up on the form toolbox, then clicking on the new checkbox and then clicking on the column. I was trying to add it straight from the class library in the project form.

Still does not work. Now my checkmarks are revised for 0 and 1. Back to the drawning board with a clean slate. ;-)