How can this be done?

So I want to create a program in which one of the functions is that I send data to a website and it sends back details about what I sent. For example I am registering for a website and I made an account name and I want to send that information to the website to see if its a valid account, and if it is for the program to return back the information that it is. I'm a beginner but have lots of program ideas and just want to know the possibilities. Thanks
closed account (48bpfSEw)
did you mean:

http://stackoverflow.com/questions/1764597/how-does-the-communication-between-a-browser-and-a-web-server-take-place

In C++ Builder there are components to build web-servers.
Kinda of...for example when you get Norton Antivirus and it asks you for a product key and you input it, that input connects to a web server that says if the product key is vaild or no right? So would I have to build a web application? Or better question what type of application are programs such as Norton Antivirus that require internet connection.
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