I\'m working on an Windows Phone 7 app where I\'m going to show ATM\'s nere your location with bing maps.
I have an xml-file with addresses and gps coordinates. But
You cannot directly pass files to the isolated storage at design time. Only when the application is running.
I'd still recommend passing the file to the application through a web service. Mainly because if eventually you will need to change the contents of the XML, you will need to update the application.
What I would do is simply create a WCF service that will return serialized data (or the existing XML) via a simple HTTP request.