System requirements:

Microsoft Windows Microsoft Word Processor 1 gigahertz (GHz) processor or higher.
Memory 512 megabytes (MB) of RAM or higher.
Hard disk space 1 gigabyte (GB) hard disk space (mainly to facilitate installation of the .NET framework).
Display 1024×768 or higher resolution monitor.
Operating system Windows 2000 / XP / Vista / Windows 7.
Microsoft Word Word 2003 or 2007 (although you can use Word 2000 or 2002, 2003 or higher has much improved handling of the tracked changes and comments Merops makes).
Other Internet Explorer 6, 7, or 8.
To process files: an internet connection is required.
To review files: an internet connection or a CD drive is required for installation.