This script are for lazy and weak memory peoples like me or for Powershell Addicts.
The Script is simple. You just need to add and set your bill Dates, or Monthly, weekly, Birthday reminder one time.
And then you can add the scrip in to your powershell $profile.
For more info visit this link : http://www.amandhally.net/2012/08/28/birthdays-and-bill-payments-reminder-script-based-on-powershell/