I want a software through which once I open my computer the birthday pop-up comes up and I can come to know whose birthday is there?
This sounds like a job for Outlook, or just about any other calendar-type program. Go have a look somewhere like Download.Com and you'll find something.
If you're planning to do it yourself, then give it a go and ask us if you have trouble with it. We are here to help developers who run into difficulties with their code, not to create software for you.
Oh, and by the way. We often get impatient people here, but complaining about the response after
four minutes is just ridiculous. What you have here is a group of people all over the world (in various time-zones) volunteering their own time when they can spare it, to help out. Under these circumstances, you can't expect an instantaneous response.