I was trying to mimic that simple chat function provided by Kentico. The link is http://devnet.kentico.com/Blogs/Martin-Hejtmanek/June-2010/DIT--How-to-make-a-chat-module.aspx But in the ChatInput web part cs code, it reports error says "'CMS.SiteProvider.CustomTableItemProvider' does not contain a definition for 'Connection' and no extension method 'Connection' accepting a first argument of type 'CMS.SiteProvider.CustomTableItemProvider' could be found (are you missing a using directive or an assembly reference?)"

I am using Kentico 6.0 version, is this the main reason that "Connection" is no longer available? Then how to execute query?