I found this information on the Dataviz web site.
Thank You for Trying our Software
Trial versions are not to be re-distributed by anyone without prior written consent by DataViz.
Please contact DataViz for further information or questions about re-distributing trial
software.
Technical Support for Evaluation Versions is available on http://support.dataviz.com
Download Documents To Go Premium Edition for Windows
(Alternative Download Link)
Version: 7.002
File Size: 32,479,352 bytes
After reading this information I have doubts about finding the requested program from anywhere but the devoloper. Maybe you should contact them at:
DataViz, Inc.
Merritt Corporate Woods
612 Wheelers Farms Road
Milford, CT 06460 USA
Sales/Upgrades/Customer Service
Phone: 800-733-0030
and explain to them about needing an older version and why. Might be the only way to go it and even then you might need to buy it.