390448 Replace HTML content (regexp)

I have a zip file with an entire website in it. There are a little over 200 html and htm pages in it. I need you to erase all of the code from all of the html and htm pages and replace it with my HTML template code. The original content can be completely erased from all the html and htm pages. The replacement code will be exactly the same on all of the pages. This could be done easily and quickly with a search and replace utility and a regular expression, but I don't have the time to do it and I hate dealing with regular expressions. I will give you the replacement code. Only htm and html pages should be affected. all other files should be left intact. You will need to send the zip file back to me by email. I am hoping to get this back in a couple of hours. I am looking for a low bid on this as it is an easy job and an easy feedback builder.