the only difference is the choice of
in the ediabas.ini file in C:\ediabas\bin folder
Also you need to choose the correct COM port which has to be native (no USB to serial converter works, some of the PCMCIA and express cards would work when readdressing the IO address of the COM port in the driver).
Then you need to run the C:\ediabas\hardware\ADS\ADS32\ executable file (I guess it is adssetup.exe) and then reboot.
You are ready to go, I use the one-stop-electronic interface, but it is also possible to build your own using the diagrams over the internet. On the interface I have, there is a possibility to switch OBD and ADS mode of the device, but then you also need to reconfigure ediabas in order to work with another diagnostic protocol. So far the ADS has worked for me even on E39, which runs only the K-lines and not L-line.
The best way to tell if you need the ADS interface is to look at the pacman diagnostic connector on your car and see if PIN 15 is wired. On E36 it always is, because the OBC and instrument cluster were ADS till the end of production.