I would recommend an updatable view. It sounds like what you're trying to do is exactly what views can do for you.

>I want to ...
>
>- build a cursor containing a subset of the main table...
>- populate a grid from the cursor...
>- have the user make a change via a pop-up edit window...
>- save the change to the original main table...
>- have the grid (cursor) also reflect the change
>
>
>I'm sure that this is an 'every day' kind of thing, but there are so many ways to accomplish this... I'm looking for suggestions...
>
>Thanks