Ask DLS: Do drag-and-drop associations work on your Windows 7?

I gave it a try, and met with no success.
I tried with PNG and JPEG images, but dragging them to FastStone MaxView didn't do anything - the file just scooted to the side and pinned itself to the taskbar. I tried ISO files and ImgBurn. Same result. I tried ZIP files and 7-Zip. No dice.
If you're running Windows 7, does it work for you? If it's limited to certain applications, I'm not convinced how useful a feature it is. If I'm missing something, please tell me.
And one further question: with so many people running the beta, is it time for Microsoft to publicize a detailed list of features like this in Windows 7, or is it better for testers to keep stumbling onto them on our own?

