Hi Blade, it would look something like this:
Code:
if(file_exists("../mapimages/".$Server['MissionFile'].".jpg")) {
echo "<a href=\"http://www.tiocoop.com/mapimages/".$Server['MissionFile'].".jpg\" target=\"_blank\"><img src=\"http://www.tiocoop.com/mapimages/".$Server['MissionFile'].".jpg\" width=\"500\" /></a>";
} else {
echo "<img src=\"http://www.tiocoop.com/mapimages/nophoto.jpg\" />";
}