Hello I am doing some changes to my site and would like to ask your opinion. I would like to change the face of the web page to give it a more professional look and adding 35 more pages with unique content. I also want to change the domain names from mywebsit.com/mycar.htm to mywebsit.com/my_happy_car.htm, about 20 pages of the site has had these changes similar to this example for seo purposes. I would like replace all files on the server with the new ones, and delete the old. My question. How do I incorporate to the server? Place all 70 pages of the new one in and let the robots do the walking on the sitemap? If done all at once will Google or Yahoo see duplicate content or are they able to see that I have removed the old and added a new revised set of pages with a new sitemap. I thank you all for looking all input is greatly appreciated from all. Thank you Dan