Microsoft SharePoint is a collaboration platform that lets organizations host Web portals to shared workspaces and documents. Security pros say implementing it is a lot like getting a tooth pulled. One of the biggest problems, they say, is configuring it in a secure manner. Third-party vendors like Epok and Captaris have developed security add-ons for SharePoint Server 2007. Despite all the difficulties, companies can overcome SharePoint’s eccentricities with the right amount of will and manpower, says George Johnson.”]