Kudos: Many people collaborated on this BMW factory & dealer software explanation, especially Quick99Si who ran through all the installs and created a nice collective site for download (including combining & compressing the RAR files to the max!) & RDL who provided clarification on the unintuitive software intricacies.
Making sense of INPA, EDIABAS, NCSExpert, NCS Dummies, DIS/GT1, EasyDIS, & ProgmanĮDIT: PLEASE IMPROVE! We are constantly updating this first post, as new information comes in (until it won't let us update it anymore).