Programming Forums - Organizing my file upload system and BBS.. im lost.

http://tricitystyle.com/shout/

A quick overview of my situation: I want to make a user based file upload system. For each file uploaded (only .jpg are accepted), I want it to have it's "own page" with it's own comment system. Now, I already have the comment system scripted. Heres what that page looks like:

        <?

        mysql_connect("...", "...", "...") or die(mysql_error());

        mysql_select_db("...") or die(mysql_error());

        $bbsId = $_GET['id'];

        

        // part1

        if (!ereg("^[0-9]+$", $bbsId)) {

                die ("Invalid id!");

        } 

        

        // part2

        if ($bbsId == 1) {

                echo "<img src='content/1.jpg' width='600' height='450'>";

        } elseif ($bbsId == 2) {

                echo "<img src='content/2.jpg' width='600' height='450'>";

        } elseif ($bbsId == 3) {

                echo "<img src='content/3.jpg' width='600' height='450'>";

        } else {

                die("Invalid id!");

        }

        

        // part3

        echo "<table width='600' bgcolor='#000000'><tr><td align='center'><font color='#FFFFFF'><b>Comments:</b></font></td></tr></table>";

        $result = mysql_query("SELECT * FROM BBS WHERE bbsId='" . $bbsId . "' ORDER BY postId DESC") or die(mysql_error());

        while ($row = mysql_fetch_array($result)) {

                        echo "<font ><b>".$row['uName'].": </b></font><font color='" . $row['tColor'] . "'>" . wordwrap($row['uText'], 80, "<br />", 1) . "</font>";

                        echo "<hr align='center' width='600' />";

        }

        ?>

Now, this script gets an id, and only selects data from the column with that id (so that each file has it's own comment system).

My problem: I want to add a file upload system. How can I integrate it with this script? How should I organize the file upload system? Sorry if I'm not being clear, but it's hard to communicate my problem.