Rewriting 5 Articles

We need to re-write 5 articles, these articles were found online and they all need to pass a CopyScape test after completion. All of the articles are withing the same field (dentistry) and are due By 6-28-07, PM me if you would like to view the articles. These articles need to be keyword rich and basically have the same set of 12 keywords with different city and state. The sample articles lengths are 400 to 700 words, I only need the new ones to be at least 400 words.