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.)
Just to back up Jay - only one version of Word saves Normal.dotx instead of Normal.dotm. The version that does this is Word 2008 on the Mac and the reason is that only this one Mac version of Word does not support macros. The m at the end of the file suffix = macro, an x = plain Word document without macros.