As far as I know you need to call one of their representatives, I've never purchased a license for an IP core before.
I'm not actually familiar with the board you're using (you didn't specify one, but I've never used a Stratix II dev board - just the Cyclone II DE2, and the SIIGX pex dev board).
My first suggestion would be to check out google and see if anyone's already done what you're looking to do. A lot of people have written very useful tutorials. If that doesn't work, try understanding how to use each component, create a design, and if you have problems, ask some questions after you've already tried to debug it.