Database Problem please help

Question

I have made a windows application, my database file is in MS-Access, i want to keep my database file on the domain server i.e DC so that anyone can update it and then i have made a form backup form which will take the backup of the database and restore it. i have used open and save file commands for that purpose. Please how i can do so that i should keep the database file on the server and access it and take the backup also. Please help me out.