Thank you, NatCh!
I realized a couple of other things in comparison, which may be of use to folks...
1. When using wifi with an Mac/Airport and an iLiad, you need to turn off all security settings on the Mac. Then it will work.
2. The dock that they sell for the Reader is totally worth it, though the Reader fits in spine forwards, which is counter-intuitive. Conversely, the leather cover they sell for the reader isn't really necessary, as the supplied black cover works great.
I wrote a manual for my kung fu school, and I'm going to try and convert it to a PDF and see how it looks on the Sony. It displayed fine on the iLiad...
Cheers!
Larry Z.