what about WINALDL ?

i was surfing the net , and i found some interface that can scan some values of the trucks.
normally ECM's
so i will do the cable that is shown in the page.
and see what happen..
anyone of you have do this before?

http://winaldl.joby.se/aldlcable.htm

if anyone do , what values are the correct for the s-10 trucks like mine?
4.3 1990 blazer

thank you..

Nalgman