Since migrating from NDPS printers to iPrint, many (maybe all) users cannot
print from the ESRI product ArcView.

* It doesn't seem to matter if they use ArcView 9, 9.1 or 9.2
* For one printer (HP LJ4650) I tried straight IP printing, using the same
driver that iPrint installs. It worked fine.
* The ArcView error is -2147220722, which means "Cannot start printing.
Error occurred while trying to access to printer device context and

Thanks in advance for any help you can provide.