I've been looking for a solution for our company (a doctors surgery) internal intranet solution and think DotNetNuke might be the one. Can I just check with ya'll which modules would be appropriate for the following functions of our intranet?

Central file storage of protocols/procedures
We need to have multiple admins upload/move/delete files and everyone to be able to read them. We also need to be able to structure the storage into folders and if possible to be able to restrict access to folders according to user roles/permissions.

Ability to alert users to new uploads to the Intranet
If it's possible to have users alerted to new documents being uploaded then that would be great. We would ideally need to be able to select whether the alert was sent at the time of upload

Internal/external contacts
We need 2 global contact directories, one for internal and one for external contacts, that can be categorised, say by department or company. Both need to be searchable

Holiday calendar
We need this to be viewable by all but only editable by those with the appropriate permissions. It would be nice if we can style different types of event, say with different colours, deal easily enter and manage recurring events and if possible to have it display a day or a week at a time

Noticeboard
We'd like to have an area that any user can post a message onto, say for items they have for sale, or for announcements and such like. Much like a virtual noticeboard that is in the office

Web links
We need to be able to have a collection of web links that can be grouped by type

Access restricted by user level
Linked to Active Directory so users simply need to log into a pc open the intranet and they have the appropriate access for them

Staff In/Out board
Not essential but if there's a way to link that in to AD as above then it would be a nice additional function

So will DNN be able to do this and which modules would meet our requirements?