Printing Resolution

What’s the best way to change printing resolution? I’ve looked at the “Printing Preferences” dialog and aside from nondescript options such as “Photo Printing” and “PhotoRET,” there doesn’t seem to be any way to specify printing resolution. I don’t even know what resolution it prints at now, but if I’m going to print some 4-5MP images, I’d rather not print them at 72 dpi.

Is there an option somewhere I’m missing?

HP DeskJet 842C btw