DK,
This is one job best left to a dealership service department. If you want to bleed the ABS, as a part of a total brake system bleed, take your car to a dealer.
Have them do the ABS bleeding proceedure after you have bled all the lines. Take along a quart of the brake fluid of your choice. You will pay for about one hour of labor, $70 to $100.
If you are having some other problem with the system start with the sensors, rings, connections, etc. If you need to access the computer, re the ABS, have a dealer do it, unless you can get access to an ABS scanner (borrow).
None of the manufacturers of the "scan tools" will sell a scanner to access the ABS system to the "do-it-yourselfer", because of legal liability.
The scanner is not impossible to get, but it will be very expensive. Most of us cannot justify the cost for a tool that is not used very often. Hope this helps, rangerj