Asset Management Application

Hello All,

I am going to be building an Application in Xcode for Asset Management. Is it easy to create files for an Application. So this way I can save the file to the server and when I double click the file on the server my client machine will know to open that file with the application that I built in Xcode. Have anyone done this before? Is it complicated? I know how to added and remove data from a plist but I have never done an application file for Xcode. Can anyone direct me to a site or forum having to do with this?