Help! Download xml from other server other than flickr


Hi, I completed the book and I am building an app that will download xml file from server, retrieve the data(values, etc) and store that data in local sql table. I will only update xml file and the app will download it and update the table. The problem I am facing is: What or Which kind of server do I need for this to work?
The Flickr provided api key and methods to retrieve it. Which servers provides the similar functionality? Does Google provides it?
Please help me with this. I am new to android programming and I really don’t know how to get this work done.