How to change the news.php?id=1 on news.html?id=1?

Are you tring just change the Text on the Address bar?

There is a way to rewrite it and such with htaccess but that is alot of work to change that informtion. what you are tring to change is not simple in that you are changing what coding is allowed in that file and how the browser reads it.

htm l is basic what you see
PHP is the logical stuff

If you change the file to html from php don't expect anything to work..