Mega Upload :: PHP File Upload Progress Monitor: "It took me five years to figure out something that PHP cannot do. For a recent project we needed to display a progress monitor as files were being uploaded to the server. We quickly realized that PHP cannot produce such an indicator dialog."
There's also the Rad Upload Java applet, lite version free: "The Plus version allows you to drag and drop entire folders onto the 'drop target'. The applet will then upload each file within the folders and their sub folders recursively. This recursive folder upload can be made to either a web or FTP server." I'm sure there's other solutions as well. (like ImageUploader, and ActiveX control)
# May 3, 2004