Digital input from generic parallel port data acquisition device.

I would like to start by saying that I am aware of problematic compatibilities concerning parallel ports. I am only looking to read in the data acquired from several analog sensors. Unfortunately this is a university lab and our equipment will probably not be upgraded for a while.

My setup is as follows: 4 separate analog sensor inputs fed into an IOtech DBK1 board, DBK1 fed to DAQbook 200 (IOtech) which (according to the manual) handles the a/d conversion, this is then connected to the pc via parallel port. MATLAB version is R2008a on windows XP with EPP parallel mode enabled. Most of the available toolboxes are installed.

My generic question is how do I actually read the data? More specifically, how do I separate the digital signal back into its component analog values/channels? There are only a small handful of answered questions regarding this procedure, at the moment I have several open and have tried their respective methods with no luck. I have also tried many of the doc center's example codes, and Simulink blocks.