You can create Word 2007 docx documents online without Office 2007. This trick can also be used to convert doc to docx format
Buzzword now counts your words as you write, so you'll always have an up-to-date count. Students frequently need a word count for essays, journalists for articles or the rest of us for more everyday tasks ("Tell us in 25 words or less...").You'll see the number in the lower right portion of the sharing bar, next to the History icon.
Try Adobe Buzzword, an online Flash word processor that's fast and innovative.