Jarance, in a nutshell the DIS is for technician and the INPA is for engineers (experts). DIS is like a guided tool, e.g. it will describe and explain the test with diagrams too, it give you the accepted range of the test result and also some repair recommendations if test fails. So DIS is quite nice.
INPA is bare-bone (Windows) and run very fast compare to DIS (which is on SCO Unix).
Anyhow, you have to install Ediabas (communication with OBD port) and INPA before you install DIS.
I have all the files you need (Daemon tool lite,VM workstation (with serial-num), ediabas/inpa/NCS/WinKPF, EasyDIS V44 base, DISV44) . Total more than 2 GB.
I also have the CD for TIS which you can install into your DIS.
Actually, theoritically you can save the .vmdk file from Vmware and run it on another machine using vmplayer (no need vmworkstation).