rewrite rule for this url?

What is the rule to rewrite following url

www.example.com/news/article.php?title=title-here&id=3
to
www.example.com/news/title-here-3.htm

Code (markup):

Any help?

 

RewriteEngine On
RewriteRule ^news/article.php?title=([a-z0-9_-]+)&id=([0-9]+)$ news/$1-$2

Code (markup):

Try that!

 

Thanks Wrighty for your reply.
I tried this but its not working

Here is the dynamic url
http://www.example.com/news/article.php?title=flip-has-little-chance-in-an-iphone-world&id=21

I need it like this
http://www.example.com/news/flip-has-little-chance-in-an-iphone-world-21.htm 

Code (markup):

 

RewriteEngine On
RewriteRule ^news/([a-z0-9_-]+)-([0-9]{2})$ news/article.php?title=$1&id=$2

Code (markup):

Try that!