Hierachical structures in valentina?

[Robert Brenstein]

>Hi!
>
>After a long time where I don't had time to do anything in RB (marriage
>etc. :-)) I have a question reagarding storage of hierachical data in
>valentina. Maybe someone here has an idea.
>
>I am using valentina for a mail- and newsreader. Now I want to store
>also the threadinfo to display it to the user in a tree structure in a
>list like the one found eg. in Outlook Express. So normally the user
>sees the first news/mail of a thread and (s)he can press a triangle to
>see the comments on this news/mail etc.
>
>Now my problem is to mark the news/mails to get them sorted in the
>correct way.
>
>Does anyone else ever used to create such a hierachical structure in
>valentina (or maybe another Database)? Or does anyone have an idea how
>to handle this?
>
>Thanks in advance!
>Carsten

Is what you plan along the lines of the FastMailbase program (a 
commercial program based on valentina as far as I know)?

Robert