Force users to save the data in shared folder on the desktop

Hi,

Here is the scenario....

I been told to implement a solution/method (GPO) to allow the desktop users to save their data on the shared

folder created on there desktop. They should not be able to save data on the desktop (only) anywhere. The

purpose of doing that is to force the users to save the data on the servers and not on the desktop so that

we can have the backup of the users...

Secondly, is there any backup solution (windows based) which i can implement to take the backup for the

users?

I am using Windows server R2 as ROOT DC and as of now i do not have file server but i have one server with

windows 2008R2 ready and can be made a file server (if required)

Regards,