Well, if this is your conclusion, then I failed!
In the link above you have an almost step-by-step guide to solve your problem, so it's only a matter of spending the due time on it.
If you start a project a little more complex than installing a jpac and seting up a PC (like your project) you should take your time and study a little. Almost everithing has just written, as you can see... and for questions, forums like this are goldmines.
Anyway the pac drive is not enought to control your lamps (for sure is not enought for leader lamps, not only because the current rating, but also because those are likely AC and not DC): if I am correct, it can control no more than 500 mA total, so you have to rely on some driver board antway. Looks like it's based on simple Darlinghton arrays.
It could be sufficient for view lamps, but only because they play one at a time...