Free vehicle support on the Ross-Tech Web Forum:
http://forums.ross-tech.com
This video goes through all the steps of ABS coding for the Bosch 5.3 and 5.7 modules found in many VW and Audi vehicles. Showing a real world example with a 2003 Audi A4.
If you can not locate the PR codes for the vehicle you are working, then you can obtain that information from the erWin. More details here:
http://wiki.ross-tech.com/wiki/index.php/Production_Codes_%28PR-Codes%29_can_be_found_on_the_Vehicle_Data_Label