File uploader in main menu during the game

Hi! I’m developing a mobile app which consist in a main menu from where you load an .xml file with coordinates of the objects to spawn.
I made the c# code to encode the xml, but actually i don’t know how to implement it… the basic idea is a main menu which says “load your file” with a file explorer (such as an upload, you know) and which let you upload an xml file to decode everytime you start the app…
Any suggest? I’m walking in the darkness, just for the file uploader :frowning:
thank you very much

If by “upload” you mean upload to a webserver then you can use the built in WWW class.

http://docs.unity3d.com/Documentation/ScriptReference/WWW.html

I mean:
Main Menu
“Hello choose your file!” File Browser