Backup of the pst file from outlook

I need code that handle backup of all the data of their outlook, the same as taking a backup of the *pst (included all the subfolders) file with all the current data: mail, contacts, address, calendar, etc within outlook. We have a network with 20/users and their outlook is configured with pop3 connection to our ISP (it should be compatible with the exchange option also). The thing I want is that every time they close their outlook it should be an backup of all their current data from outlook and save it into an pst file, if the pst file is older it should be overwritten to the their server. It should be some form where I can set the server share path!! ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Exclusive and complete copyrights to all work purchased. (No GPL, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site). ## Platform Plattform: Windown 200o and above Outlook client: 2000 and above