Don, you've found the way to find out if a particular helmet model (and size, too) is rated by the Snell Foundation. But please -- if you order your new helmet rather than buy it in person -- be absolutely sure to specify that you want a Snell 2010 (or Snell 2005, if that's your preference) helmet.
A few years back I wanted to buy a new helmet and went to the Snell site. I discovered that the model I wanted was, indeed, being manufactured and rated with the (then) newest rating -- Snell 2005. So I went to an on-line outfit to buy the helmet and ordered the model and size I wanted. Sooner or later the new helmet arrived -- with a Snell 2000 sticker inside. "Hey", I said to the vendor -- "I wanted a Snell 2005!" "Too bad," I was told, "'cause we're not going to ship those 'til we've exhausted our stock of the old ones."
I learned then and there to specify, right down to the nuts, exactly what I wanted. Specify Snell 2010 on your order - so you've got easy recourse if they ship and older model.
For that matter, be sure to specify exactly what you want when you order anything, right?