Upload:
Drag & Drop files or click in the area above (modern browsers) and select the file(s). When the upload is complete, click the 'Return to files list' button.
If the Java Applet doesn't load, 1. make sure you have Java installed, otherwise [download link] 2. make sure nothing is blocked by your firewall

There is an error! The upload folder there isn't. Check your config.php file.