1.UnRAR .ISO file (from parts 1,2,3,4) 2.Burn to CD or mount with PowerISO or similar software and install. No key is required! Enjoy! Microsoft Office 2010 gives you powerful new tools to express your ideas, solve problems, and connect with people. Office 2010 lets you work how, when, and where you want, letting you get things from a PC, the Web, and even a smartphone. Use Office 2010 virtually anywhere: PC, phone, browser With Microsoft Office 2010, you can review and do minor editing on Word, Excel, PowerPoint, and OneNote 2010 documents, virtually anywhere, by using Office Web Apps from more locations on more devices. Keep your people productive on the go. Office 2010 lets you access and edit documents stored on a server while you're offline with SharePoint Workspace 2010, and then automatically syncs these changes when you're back online. So you stay productive while on the go. Support your employees, regardless of location or device. Office 2010 saves you time and money by helping you deploy and manage Office on the PC, the smartphone, and the Web, all from within familiar Microsoft System Center tools.