Well, you understand that it's the changing structure that's the problem.

I've worked around this with a view off a "unuversal" structure containing all the fields I'll ever need. Make this your recordsource. Then, in pseudo code:

1. Make your query to a table
2. Select the universal structure, zap
3. Append from the table
4. Refresh the grid.

I'm sure there are other ways this can be done but this one's worked for me.