I think maybe you need to download again, jcarson. I was using version 1.2.0 and had the option selected for K4PC to update automatically when new versions come out, but it hadn't updated, so I just downloaded it again from
http://www.amazon.com/gp/feature.htm...cId=1000426311 and when I installed that, turned out to be version 1.3.0 with dictionary lookup. It appears not to be optional which dictionary to use, though I might be wrong there, but I can't find any option to replace the supplied dictionary with an alternative (comes with the New Oxford American Dictionary - first time you highlight a word inside a book after installing the new version, it downloads the dictionary from somewhere on Amazon's servers).
Hope that helps.
- Donna