> Sorry William, but I really want to have the article
> files in the format article.php?id_article=xxx.html
> because it has to be connected with another prg that
> reads it as this.

Sorry also but everything past the question mark is an argument to the server
so it can't be part the file name on your machine.

You can use options/build to specify better filenames like
article.php?id=xxx to article_xxx.html but not what you want.