Office Professional 2010 comes in four retail versions, and two versions that are only available for businesses with Microsoft licensing agreements. Office 2010 (64-bit) combines everything you need to create, edit, and sharing document from anywhere. You get on-line tools to run your business and projects easier. System Requirements: 1. Operating system: Windows 7/Vista / XP; 2. Media: CD-ROM; 3. Windows: 500 megahertz(MHz) processor or more; 256 MB RAM; 2 GB disk space.