Control wallpaper and task bars for multiple monitors

If you're lucky enough to have a multi-display system, congratulations. You've now got more screen real estate than you know what to do with. Whether it's bigger images or more pages of code, you've opened up a whole new world of usability on your system. But of course, no good deed goes unpunished, so you also know that your life can get geometrically more complicated through the addition of this extra monitor. A tool like DisplayFusion can help you win control back of your system.
DisplayFusion lets you define individual wallpaper designs for each monitor, or you can use a single image and have it stretch across both (or more) of your displays. In addition, you can add a toolbar to each screen, allowing you to control your system from whichever display you're working on at any moment. You can also move application windows from one display to another, allowing you to make maximum use of your screens at all times.
DisplayFusion is a Windows application. You'll need Windows XP to use it, as well as version 2 or later of the .NET Framework.