Scan tool for 1987 Lesabre (and others too)

I have always wanted to see the sensor readings that the computer gets without spending a lot, well with a little electronics work and a PC with a serial port, you may be able get the data. Go to [url]http://w1.601.telia.com/~u60113744/software/winaldl/winaldl.htm
to get all the stuff. This is for a non OBD 2 car. I got mine working in a few hours.