Multiple Upload add-on of Office 2010 not working with Sharepoint Server 2003

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I am utilizing the "Upload Multiple Files" feature when Uploading multiple files in the Sharepoint 2003 Document Library.

Previously I have Office 2007 installed on my PC, the UI of "Upload Multiple Files" displays a folder tree at the left pane and all the files listed on the right pane. I just check all the files I want to upload then clicking the Save button will upload my selected files.

But when I upgraded my Office to 2010, the UI changed to "Drag and Drop files" which allows me to drag and drop files into the "Drag and Drop" window, but clicking the Save button doesn't do anything.

How can I make the "Drag and Drop files" UI work with Sharepoint 2003?