Let's say you create a new class file called Class1.  If you try to rename "Class1" in the solution explorer, we'll prompt you

This blog post has moved to http://saraford.net/2008/03/11/did-you-know-you-can-have-vs-automatically-do-a-rename-within-the-entire-project-when-you-do-a-file-rename-in-solution-explorer-169/