How determine if my stream is listed on a online radio website?

I am trying to develop a web application that will do the following:

1. Collect the information like websiteUrl, email address, language, stream format (audio, video).
2. Now I have a list of directory names and website url and submission url and their accepted stream format (i.e: Radio, Tv or Both) as well as language (english, spanish, freanch, or all language).
3. Now when the user put his information described in 1, and click on proceed button, we will first retrieves the name of the directory and all its information saved in the database according to users input (stream format, language) and then we need to look up if the stream is already promoted to any of the directories retrieved from the DB.

I think we need to do a web request and parse the returned html to see if the stream is there.

Is there anyone who can help in this regard? I am really unknown about this type of issue. Any help in this regard will be a awesome help for me. By the way I am using ASP.NET MVC 2.0 and ExtJs to do this 开发者_StackOverflow中文版project.

Regards, Mohin

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I have found the answer myself. It seemed that no body wanted to answer my question. I had to struggle a lot and finally found the solution but I was really in a hurry.