Ok, I've posted the last version of the code I had at
eqengine.zip
It builds with visual c++.net 2003 and directX9 SDK.
This URL is likely to only work for a few days from the time of posting.
You need to manually copy all of the DLLs including zlib.dll and the EXE to the main top level directory, and then copy in the EQG file you want to view and then start with with "eqengine zone.eqg" from the command line.
As this isn't in any way a replacement for purchasing the game or subscription I feel any doubt over posting this program and may continue to work on it.