VBirthday 2 Freeware 2.0
the author of this app says:
This application alerts you when your friends' birthdays or anniversaries are coming. It scans your contacts for all birthday/anniversary events, sorts them and displays them to you. You can sort by name, age or next event.
Supports: PocketPC 2000, PocketPC 2002, Windows Mobile 2003, Windows Mobile 2003 SE. Windows Mobile 5.0 is not supported.