How to achieve 500 one word substitution ?

Hi,

You can use find and replace option to achieve your objective.

1. Home > Replace
2. Then enter find what and replace with
3. Replace all

It will replace all 500 words instantly. 

Word count feature in 2007 is really useful, you can turn it on by doing the step below:

1. Point your mouse to the bottom of the word window and press right click
2. Choose the option word count

After doing the step above, the word count feature will be turned on for the entire document and you can see the count in the status bar.

Another tip, if you want to count words in a paragraph or sentence, simply block the words using your mouse and you can see the word count.

If you need more information, click the link I provided below

• http://wordprocessing.about.com/od/microsoftword2007/qt/07wordcount.htm