How can i create a directory listing from categories and articles retrieved from K2 like yahoo directory or alpha content ?

Thanks

At K2 home page i saw that directory listing is a posibility

K2 is the ideal solution for managing your content, regardless of site "size": you can use it from a small blog to a complex corporate site or even a multi-author environment (portals, magazines etc.). To provide a practical example, using K2, you can transform your Joomla! website to a news/magazine site with author blogs, product catalogs, work portfolio, knowledge base, download/document manager, directory listing, event listing and more, all this bundled under one package! And since K2 is extensible with additional fields to its base item form, you can easily create category-specific content types, e.g. article, blog post, product page, directory listing.