If you receive "No process is on the other end of pipe…" error when you attempt to connect to the SQL Server 2005, then check if: SQL Server services are running remote connections enabled port settings are correct DNS gets resolved properly firewall
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For some reason, Microsoft has decided to hide Event content type in SharePoint (MOSS/WSS) and prevent users from creating a custom list based on that content type. To unhide Event content type: Open your existing calendar on the site and go to List Settings
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