Haha - I used Zen Cart years ago. Of the carts of that type, it is pretty OK. I have to say that I'm much more impressed with Ubbercart and Drupal. Much more power. Clean, and rather easy for the basics, yet able to be expanded with minimal amounts of work. I have played with many different cart options, and I really like this one.
Sorry, that was off topic. All of the tech questions can get annoying when you are a volunteer. I'm surprised how good this site can be at times. Drupal can get complex as many modules can effect other modules, and ultimately every Ubbercart store can be very different as the modules installed give so many choices. Does make it interesting for sure.