ICQ 8

ICQ lets you set up notifications for reminders about your contacts' upcoming birthdays. 

In order to receive these notifications, go to the "Notifications" tab of the application settings and check the appropriate field. 

You can also specify how soon before a birthday you want to receive a notification. To do this, select the desired option from the dropdown list.

When you are done making changes, click "ОК" — you'll never forget another one of your friends' birthdays.