Hello Ilaria,
As Dave noted in his reply to your previous message, you can create a
consolidated (or master) project by combining multiple projects. If
you are using the same resources across the projects, you will want to
create a resource "pool" file to hold the resource information and
then connect the project files containing the tasks to the pool file.
See help in Project on resource pool files.
If you use the "pools and sharer files" combination, you can create a
consolidated master file through the pool. If tasks in one project
are dependent on tasks in another, you can link
(predecessor/successor) across the project files. Again, help in
Project does a very good job detailing this. Certainly if you have
further questions, let us know.
I hope this helps. Let us know how you get along.
Julie
Project MVP
Visit
http://project.mvps.org/ for the FAQs and additional information
about Microsoft Project