>HI!
>
>A program was made without subclassing, big mistake, I know. To correct this, I try to open the VCX as a table and to change the BASECLASS field of the object im interested, a Form. But this doesn't seem to work... Any idea on how can I achieve this work of substituting base classes? Thanks a lot...
>
>An Michel R.

Hope you made a backup before you started.

You also need to change the classloc field to point to the .VCX that contain your classes.
Update:

It's not the baseclass field you want to change at all it's the Class field (and the classloc).