hi,
I want to write a very little "contact.php" file so that it includes
"index.php?id=contact".

Please let me make my words clearer:

Internet user will type www.sitename.com/contact.php in the address line in his browser, and then the page will be loaded as "index.php?id=contact".

However, it's desired that internet user never encounters with such an address: www.sitename.com/index.php?id=contact although index.php that takes an id, is included in the contact.php.

before answering, please be sure that you got me correctly, thanks...

You have a few options. You can use a frame so all anyone would ever see is www.sitename.com but that is bad for search engine optimization (so you can get a higher rank in Google, Dogpile, Yahoo!, etc.) so you can also require the file by using require('page.php'); or require_once('page.php'), etc. How do you specify which file to require? Save this information in a session or cookie. I would recommend using a cookie because required files generate new session ID's. It depends how you write your script if that would be a problem or not. If you're not worrying about SEO (Search Engine Optimization) I say use a frame.

Take a look at Apache RewriteEngine for htaccess url rewrite.

http://www.yourhtmlsource.com/sitema...rewriting.html

Thanks mgraphic and Mattmaul1992 for replies.

mgraphic, I suppose the link you posted concerns and handles my problem,
thanks again...