How do I change the file that the XSLT template is using in Visual Studio 2010?

I have an XSLT file and the first time I ran it, it asked me for an XML file. How do I get it to let go of that setting and let me choose a new o开发者_Python百科ne?

Open the XSL file, then go to the Properties window ('View->Properties Window'/F4). The XML file to be tranformed is the Input field in that window.