From the article: Facebook Games Cheats, Hints and Tips
About Birthday Countdown (from the developer: Internet Design Zone)
Get a cool birthday countdown clock on your profile. We have many backgrounds for your birthday countdown. Just select the background, enter your birth date and the flash countdown clock is displayed in your profile.
More info can be found on the official Birthday Countdown Facebook Application page. If this isn't the Facebook game you were looking for then check our Facebook Game Cheats index.
Read on below to find cheats, hints and tips for Birthday Countdown... You can also leave your own tips.