If you are still interested in a CAD integration, my company could do one for you as a custom project.
You can get an overview of our existing capabilities by viewing the online demo of our SolidWorks integration at:
http://www.design2enterprise.com
It would be a fairly straightforward effort to adapt this existing functionality to the Pro/E (or any other) CAD system.
If your company is interested, you can reach me at 919-809-7209 or info@design2enterprise.com
Chip Depew
Design2Enterprise