The display you linked to looks like it probably uses the common HD44780 interface. This is the same interface that our 8x2 character LCD uses, and having a P-Star example for controlling those kinds of LCDs would certainly be interesting. How soon would you need this for your class?
If you want to try writing something yourself, the datasheet you posted would be a good place to start as it includes a lot of example code which you should be able to port to P-Star. You can also look at this Arduino library for the HD44780 interface, which we have been using on our latest AVR-based products:
If you try to make your own code and run into trouble, you could post your code, pictures of your connections, and a description of the problem here and I would be happy to take a look.