My Vaio laptop came with Office 2007 60 day Trial version. As I didn't want this software I purchased Office Home & Student edition. Can this be installed over the top of office 2007 or must this version be uninstalled first. There are other office programs showing in the "uninstall" software box under control panel too. Should I remove all of these too? They are Office 2003 Web Components; Office 2007 Primary Interop Assemblies and Small Business Connectivity Components. HELP please?