Hi Caroline,
take a look at "Behavior Changes since the Previous Version" chapter in VFP7 help.
In particular, for menus:

- The format for menus (MNX file) has changed to include new Picture support.

and for DBC's

- The format for a database (DBC) file will be altered if DBC Events is enabled. This will render the DBC incompatible with prior versions of Visual FoxPro and the ODBC driver. You can restore backward compatibility by disabling DBC events for the DBC. The Visual FoxPro OLE DB provider does support DBC Events.

AFAIK, there's no modification on tables.

HTH

Franco

>Hi all,
>I've been using VF7 for some time now but have recently been asked by an existing client to create a new import/data manipulation program for an existing VF6 application.
>
>I really don't relish going back and writing the whole app in the VF6 IDE and was hoping that I could create it in VF7 and when done open the project in VF6 and compile it to a EXE for distribution at their site.
>
>Now I remember that there was a compatibility issue with menu's but if I only develop in VF7 but compile in VF6 will this work?
>
>Will there be any problems with Databases and Tables that have been opened in VF7?
>
>Are there any other pitfalls that I should be aware of before I go down this route?
>Many thanks for any input.
>Caroline