accessing parallel port!


I'm pretty new on the Delphi scene, but I am advancing pretty quickly.
Currently I'm busy trying to develop a simple application for a business.
The main problem is that they use a weighbridge, it's like a big scale for
They have a device that reads the weight of the truck and displays it.

Here is the problem: How do I get the displayed number on the device,
through the parallel port and into my delphi application?

If anyone can help please email me at {*word*104}