Microsoft Office: Online Converters & Viewers - Read Microsoft file online

With the help of converters and viewers from internet providers, you can easily share your Microsoft Office files with people who have different version MS Office program or who don't have Office software.

Converters allow you to open files created by people using different versions of your Office programs.

Viewers provide a means for people who don't have Office programs to see your work. You can provide them with the appropriate viewer along with your Office files.
http://office.microsoft.com/en-us/downloads/HA010449811033.aspx