Setup and deployment .NET

Question

Hi everybody,

I'm using VS2008 for a local application using .NET and MS Access Database.
I've created a Setup and MSI installation project and everything works fine.
However, due to the sensitive data contained in the DB I've been required to prompt the user
with an installation folder where the DB will be stored (a standard edit field and browse button will do).
I can't find a way to add it to the "Installation Folder Form" or add a specific form to be included in the
Setup project.

Any suggestions?

Thanks in advance
Giovanni