First of all, you need to subscribe to a news site which has a web service or rss feed that you could consume in your client.
Google News API
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Then in your client page, consume this feed and as a minimum requirement build a website that refreshes every few minutes.
This would be the very basic of your website.
These two examples could help you get started
MyFeedReader - A simple feed reader using ASP.NET 3.5, LINQ, WCF Syndication API and AJAX[
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ASP.NET AJAX RSS Reader[
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