If you happily using Microsoft 2003 or little older version, you might encounter issue opening latest office document containing with letter ‘x’ at the end any extensions like word (docx). Many users might think that upgrading to version 2007 or using OpenOffice version 3 might solve your problem. Eventually, this is not really necessary. All you need simply download and install the Office 2007 File Capability pack. It will auto convert any 2007 documents when you open it.This may be already posted by lots of bloggers out there. But I still find many office users are not aware of it, especially for those who are not good at this problem. It will be handy for anyone saved this program, you might not know some PC unable to open it.