new myspace mobile acess

[wattrone]

Hi All,
I am trying to make an application for mobile device. As I am new to OAuth and MyspaceID , I followed the steps given in the myspaceID documentation. I am not clearly undertstanding how to set up the callback URL. I understand that Access Token will be sent to this url. Do I need to open a webpage from mobile application and Authendicate the user? Can I use any recommented callback URL for my application if I dont have client url? It would be really great help if some one can help me on this.
Thanks a ton in advance.