The last "release" version of 3dengfx is 0.1, which is very, very old and not recommended. Soon we will release version 0.5, until then there is a 0.5 pre-release available through anonymous ftp here:
ftp://ftp.berlios.de/pub/engfx3d/prerelease/3dengfx-pre0.5rc3.tar.bz2
which is highly recommended at this point. Also you may want to use subversion to get the latest development code:
svn co svn://svn.berlios.de/engfx3d/3dengfx