The Royal Wedding Countdown Clock is a FREE desktop countdown clock software. It exactly measures the time remaining to the Royal Wedding 2011. Besides that, you can use it as a traditional windows clock replacement. The alarm function lets you define your own custom alarm with sound. It nicely integrates with Your desktop - You can choose to pin the clock to desktop, use it as a normal window, keep it on top or even force it to foreground (when in click-through mode). Plus some other options, such as "hide on mouse over", "start with Windows" and "clock transparency" configuration.