This program is mandated by Section 5 of the Toxics Substances Control Act (TSCA). The New Chemicals Program functions as a gatekeeper which can identify conditions-up to and including a ban on production-to be placed on the use of a new chemical before it is entered into commerce.
Currently, the newest version is MS Word 2010. Same with all the other different MS applications (PowerPoint, Excel, etc.)
You should be able to open it with word 2007 or 2010. This is the new standard extention for all word documents after 2003 edition. Well, the all new office 2007 creates files with an x in the end. E.g .doc --> docx, .xls --> xlsx.