PowerExtensions is a Effective Extensions for Explorer. You can add any file to the PowerMenu in Explorer just by two clicks. Then acess them easily by right click on the explorer's background. Register version support application group. You can start all programs in the group at one click. Use PowerExtensions you can register/unregister dll in explorer. Right click on dll, ax, ocx files in the explorer, you can select register/unregister menu item. If you always open a dos prompt window and run regsvr32.exe you can find this tool is very usefull. It can run the application with a input dialog to input parameter. Copy file or files full path to clipboard. You can select copy short style(DOS 8.3 format), c style(\\), or UNIX style(/). PowerExtensions can display directory and sub directory size. In calculate mode you can include/exclude some directory. You can copy the directory structure to clipboard like you show them use tree command under dos prompt. Easy open a DOS prompt window at any folder you selected.