I got to see this the other day. If you go in expecting something like the original, I'm afraid you'll probably be disappointed. This one is done cheaper than the first and is definately aimed at a lower age group. That said the graphics on the dragons are pretty well done, so that aspect gets a thumbs up from me.
Here is the bad dragon. Probably looking at these pics is a spoiler to the plot, but its fairly obvious anyway, so hopefully it won't ruin anything for you.