Charger should come with a manual, although its prob not the best or clearest, take the time and read it. It will give you an idea of what you need to do to charge your batts.

Basically, you'll need to tell the charger the charge rate you want to use, peak sensitivity, number of cells and pack capacity. If I remember correctly, some of this is done in user setup and some in the NiMh charge porgram.