Countdown

Countdown is a user-friendly gadget that provides you with the ability to set up various timers to remind you of an important event in your life, and be alerted with a sound alarm at the date and time you prefer.
The utility is fairly simple to install and handle, meaning that even if you have no previous experience with such tools, it will not take you long to figure it out and benefit from it to the fullest.
Countdown allows you to set up to twenty distinct alerts, by entering the corresponding name, choose the expiry date and hour, down to the minute and optionally select a sound which will be played upon completion, from the available Windows sounds ('Critical Stop', 'Device Connect', 'Exclamation', 'New Notification', etc). However, you cannot use custom audio files.
Additionally, you can enter a description for your countdown, enabling you to remember what it was set for in the first place. When done, you can simple press the 'Add' button and it will be listed in the program's window, along with the remaining time until its expiration. Nonetheless, the created countdowns can be edited after they are set.
Its appearance can be customized, so you can either 'Dock' or 'Undock' it as a small or large window, with 'Rounded', 'Diagonal' or 'Squared' corner style. You can also choose the number of times to play the sound alert and its volume for when it goes off.
This gadget can prove quite useful, particularly if you are prone to forgetting important dates, like anniversaries, project deadlines or other similar events. As such, you can use Countdown on your Windows Vista or Windows 7 system and set up all the reminders you need, thus preventing you from ever missing a birthday or assignment again.