Ok, so this mess (below) is what I've got currently. It is supposed to do a lot of things that basically result in a very "simple" (for the user) file-uploader... it checks for duplicate files and adds an integer to the end -- which doesn't work... and it's supposed to create a directory if there isn't already one for that "plat" -- which also doesn't work...

PHP Code:
            // NEW FILE -- UPLOAD IT!
            if ($_FILES["file"]["error"] > 0){
                echo "<li>Error: " . $_FILES["file"]["error"] . "</li>";
            }
            else{
                echo "\n\n<li>File: " . $_FILES["file"]["name"] . "</li>\n";
                echo "<li>Type: " . $_FILES["file"]["type"] . "</li>\n";
                echo "<li>Size: " . round(($_FILES["file"]["size"] / 1024),2) . " Kb</li>\n";
                echo "<li>Temporary File: " . $_FILES["file"]["tmp_name"] . "</li>\n";
                $uploadto = ('docs/plat/p'.$plat.'/');
                    $thisFile = $uploadto . $_FILES["file"]["name"];
                    if (file_exists($thisFile)){
                        $duplicate_filename = TRUE;
                        echo("<li>" . $_FILES["file"]["name"] . " already exists.</li>");
                        $filename_data = explode(".", $_FILES["file"]["name"]);
                    }else{
                        $duplicate_filename = FALSE;
                    }
                        $newName = $_FILES["file"]["name"];
                        for($i=0;$duplicate_filename;$i++){
                            $new_filename = $filename_data[0] . "_" . $i . "." . $filename_data[1];
                            if(file_exists($new_filename)){
                                $duplicate_filename = TRUE;    // Cycle Again
                            }
                            else{
                                $_FILES["file"]["name"] = $new_filename;
                                $duplicate_filename = FALSE;
                            }
                        }
                        if(!is_dir($uploadto)){mkdir($uploadto);}else{} // Add a Docs Folder for this plat -- if it doesn't have one already
                        move_uploaded_file($_FILES["file"]["tmp_name"],
                        $uploadto . $_FILES["file"]["name"]);
                        echo "<li>Stored in: " . $uploadto . $_FILES["file"]["name"] . "</li></ul>\n";
                        $fileplat = $platID;
                        $filetitle = $_REQUEST['title_new'];
                        $filefile = $_FILES["file"]["name"];
                        $filecategory = $_REQUEST['category_new'];
                        $fileuser = $_SESSION['id'];
                        $filedate = date('Y-m-d');
                        $fileformat = $_FILES["file"]["type"];
                        $fileactive = $_REQUEST['active_new'];
                        $filequery = "INSERT INTO addendaData VALUES (NULL, '$fileplat', '$filetitle', '$filefile', '$filecategory', '$fileuser', '$filedate', '$fileformat', '$fileactive')";
                        $fileDB = new ConnectDB(); //instantiate a new Connect class
                        $fileresult = $fileDB->ExecuteQuery($filequery);
                        if($fileresult){
                            echo("\n<ul><li>The New Document (".$filetitle.": <a href=\"".$uploadto.$_FILES["file"]["name"]."\" style=\"color:#FFF;\" target=\"_blank\">".$_FILES["file"]["name"]."</a>) for <strong>\"$platName\"</strong> was added successfully.</li></ul>");
                        }
                        else{
                            echo("<li>Error while trying to add the new document for <strong>\"$platName\"</strong>! Please Contact the <a href=\"mailto:webmaster@newhometeam.net\">System Adminstrator</a> to report this error.</li></ul>");
                        }
                        $DB->Close();