Open source forcing shift in software buyingProponents have long said that open source software would change the industry. Well, it has. Here\u2019s how vendors and users are dealing with the new reality. Read our story for details.Microsoft\u2019s Office 2007 includes new twists and turns on products licensingMicrosoft on Thursday unveiled its Office 2007 package that includes a collection of new applications, servers, bundles and licensing options targeted at providing users with collaboration, content management and business intelligence. Click here for more.Weekend EditionDon\u2019t forget to visit our home page this weekend for our Weekend Edition, featuring this week\u2019s cartoon, Good-Bad-Ugly and all the most-read forums, white papers and blogs of the week.Attack code targets Media Player flawExploit code has been released targeting a flaw in Microsoft's Windows Media Player, the French Security Incident Response Team (FrSIRT) warned Friday. Click here for more.Government updates national health network plans, focuses on implementation concernsAmid privacy, security and technological concerns, healthcare IT professionals got a progress report on the status of the Nationwide Health Information Network, which seeks to improve patient care and reduce medical errors in implementing electronic health records systems. Click here for more.Study: Telecom is over the humpThe telecom slump may finally be over - not only are users spending more on telecommunications services, but a new report released last week shows strong growth in network equipment, wireless devices, wireless services, Internet access, unified communications and conferencing. Click here for more.Bonus coverage from DEMO 2006In this week\u2019s Cool Tools video, Keith Shaw talks with Multiverse about its multiplayer game development tool and looks at Riya.com, a really cool photo sharing service. Watch it now.Today on Layer 8, where we\u2019re too close for missiles, switching to guns:AOL vice chairman pretty much admits AOL\u2019s blog software falls short; the ugly truth about Bob Costas\u2019 fireplace; cockroach-assimilating wasps; and the lengths a man will go to for his iPod; all that and more today at your home for not-just-networking news.For news updated throughout the day, go to Network World's NetFlash news page.