Microsoft Windows is an operational system for PC compatible computers with multi-task support and intuitive graphic user's interface. It has modest resource requirements compared to the more advanced operational systems from the Microsoft Windows family. MICROSOFT OPEN LICENSE CHARITY The Microsoft Open License Charity program allows eligible nonprofit organizations to acquire multiple software licenses - rather than multiple software packages - at reduced prices. You only need to purchase a complete software package and enough licenses to cover the remaining amount of computers. The Open License Charity program saves you money by not including disks and documentation - you pay for the license rights, not the expense of additional packaging. If you don't have media for the software, you can purchase one legal copy of retail product or order the disk and documentation set when you place your order of five or more licenses. SOFTWARE ASSURANCE Microsoft's Software Assurance gives you automatic access to new technology and provides productivity benefits, support, tools, and training to help deploy and use software efficiently. With Software Assurance, you receive access to new versions of licensed software released during the term of your agreement to deploy at your own pace. New Version Rights simplifies the procurement process and shortens the business process cycle, allowing you to reduce the costs associated with acquiring new version releases and immediately take advantage of the latest technology.