for those who are having problems with your dectalk pc, pc2 or express,
here is a web page that has several trouble shooting tips and new
drivers to download that might help.

DECtalk Troubleshooting
http://www.ultranet.com/~rongemma/dt_trblt.htm#Trouble

this page also has the firmware updates for the express.
after downloading the firmware, unzip it and read the readme to find how to
find out what firmware you already have and how to install the update.

phil