In order to find a file / class in Visual Studio - use the "Find In Files" toolbar combobox. You will however need to write a magic word before it starts searching, just type "> of" before the file name, like "> of User". VS will help you with some of the files that contain this name:

Hope this raises a bit more of productivity out there.
If you need more - you may want to try Telerik Just Code ;).