in your first form
$imagesrc[1] = "image1.gif";
$imagesrc[2] = "image2.gif";
$imagesrc[3] = "image3.gif";
echo "<input type = 'checkbox' name = 'checkbox[]' value = '".$imgsrc[1]."'";
echo "<input type = 'checkbox' name = 'checkbox[]' value = '".$imgsrc[2]."'";
echo "<input type = 'checkbox' name = 'checkbox[]' value = '".$imgsrc[3]."'";
after posting to new page
<?
$check = $HTTP_POST_VARS ["checkbox"]; //grab checkbox array values
for ($i=0;$i<count($check);$i++) { //loop through array and display images
echo "<img src = '".$check[$i] ."' />;
echo "<br>";
}
?>