Opera's site now has further details about the DS Web Browser, this time in English. There's a whole section dedicated to tips and tricks that provide a good indication of how the browser works with your touch screen and stylus.
"Forget the scrollbar - DS browser users prefer panning. When in either browsing mode, simply tap the screen and drag your stylus to move the screen up or down.
Other tips describe how to submit forms or which buttons do what.
"Keyboards are so old school, try handwriting on your DS. To really speed things up, handwrite your URL and then tap with the stylus on one of your "Speed Type" buttons to add your tag. This is a good way to practice on-screen writing so that you're ready when the delivery man comes by."
You can find out more information, including some exclusive screenshots over at the Opera website.