If you download the free Compatability Pack from Microsoft at
then that should solve the problem.
We are running Windows 2003 and can now open .docx documents. However, before downloading the pack you must make sure all your Microsoft updates are up-to-date otherwise it won't work.
Hope this helps. It seems people everywhere are experiencing the same problems.
Hi, Is there any way to convert a .docx file to .doc file without Word 2007?