So far best version from a dvd drive ( virtual or physical) is using peterf1999's version with :
1)delete install.ini & install.exe
2)rename IS.exe to Install.exe
3)edit autorun.inf :


Code:
[autorun]
OPEN=Install.exe
ICON=install.exe,0
LABEL=NecroVisioN

However, this launches both the modified setup and the official Necrovision setup at the same time using xp pro sp3.
To get it to work you need to click and run the official installer first - then the modified one to unpack the arc file.
Installing from hard disc with "original" install.exe this doesn't happen - It installs all parts automatically.
Getting close so there must be a simple solution around the corner.