Hi, Librarian users

I Work with DMS to realised a 'virtual Administrativ Folder'
For instance : You should have Portal where you could find any information
related to a member of your address book.
Member Xxx => mail, appointment, task and ... any documents
Same as tab in "Historical Tab " in GW6.5 Frequent contact address book
but not limitated to user's actions.

For this, i need to change document.author by software
I work with Advansys Formativ and/ or VB.
I know hjow do it with subject, fields but no for author

Any ideas ???? or a little piece of code ?