>I got it and played with it.
>Set initial value of the check to be .f. (not 0) and remove all code from its events :-)

Great, thanks a lot. I also think I need to make this column a big wider and center checkbox in the column (is it a new property in VFP9?)

In other words, seems like you found a source for lots of my problems since I never paid attention to the default value for the checkbox placed in the grid.