articles on Excel

Hi I am looking for people with a good and very good knowlege of Excel , to write 10-15 lines articles on Excel 2007/Excel 2010. We will need up to 500+articles to be written. **Absolutly no copy/paste or plagarism.** All the information for these articles are available on the net, so you can then rewrite the content and the examples. Many of the articles will need screenshots. We will supply the titles for the articles. Examples of these titles are How to Use a Workspace to Remember What Workbooks to Open How to See Headings as You Scroll Around an Excel Report How to use the Vlookup functions if you have duplicates etc etc Please quote price per 25 articles and tell us about your level of Excel.