you need to use the GET method to define variables and send them to another page via a URL. For example:
[HTML]Item Description Click Here[/HTML]
Your variable assignments come after the ? in the URL and are separated by &'s....
Then, on next_page.php, invoke the following code:
[PHP]$first_variable = $_GET['first_variable'];
$second_variable = $_GET['second_variable'];[/PHP]
Now you have access to your information via the variables $first_variable and $second_variable. You can use the variables in your database query now.