>>>Thanks, I created a class called "update_tables" based on the projecthook class. I edited the BeforeBuild method as above but it does not appear to fire (I tried outputting messages to the screen to see its zapping/appending progress but nothing shows?).
>>
>>Hmmm,
>>Did you add it in Project Info?
>
>yes, under the project info dialog I checked the box and selected the new class file is called "project_hook.vcx". It contains a single method called "update_tables". This method has the BeforeBuild code as above. See screen shot.

No,
Open your main project and then select Project info (check picture 1)
Then add Project hook class (check picture 2)