Contacts Synchronization using a custom Web Service RRS feed

  • Question

  • I have a final year project in my college of developing a contacts sync app for Windows Phone 7 which uses a web service (not google contact  or any !) 
    but i don't know where to start with ...
    though i am able to design the phone 7 app ... but i don't have any idea about how to design a Web Service like this ???

    So Need a helping hand in this concern who can tell me how to develop my App?? ..

    Thanks :)
    Tuesday, January 3, 2012 2:46 PM