The Process Explorer display consists of two subwindows. The top always shows a list of the currently active processes, including the names of their owning accounts, and the information displayed in the bottom window depends on the mode the Process Explorer is in: If it's in handle mode, you'll see the handles that the process selected in the top window has opened; if it's in DLL mode, you'll see the DLL and memory-mapped files that the process has loaded. Process Explorer also has a powerful search capability that will quickly show you which processes have particular handles opened or DLLs loaded.