Hell,
I used a paging code in my index.php and worked properly, and did not work properly for navigating to categories.

In index.php the following code:
$qyury = "select * from content";
In category.php the following code:
$query = " select * from content where CCat_ID = ".$_GET["id"];

To get more clear about my problem, the page I'm taking about is linked below with more explain, please help me!
http://upload.9q9q.net/file/06ZwVSjhFdB/topic.rar.html
Thanks.

Can u paste the code which you are used for the purpose?

Your URL leads us to an Arabic page
how we check anything with that?