HTML / PHP

Hi

I have installed CMSB on a clients website , he has over 300 html pages we are only going to use CMSB on 10 pages.

These 10 pages are in html so when I generate the code and insert into web pages the output is asking me to change the pages to PHP

Does that mean I have to manually change the links on the other 290 html pages to link to the PHP pages ? or is there some why to chnage the php to html

Example faq.html now becomes faq.php ?

Thanks

GB