This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
That xml file is generated when you run junit from ant or maven. Since you aren't using any build tool now, I recommend Ant. That way you don't have to restructure your project/use the Maven lifecycle. With Ant, you can write a build script that just executes the <junit> task.