You can leave a message for Thomas...he is slowly bringing Polyloop up and one of the things yet to be brought back is the download section, including Amapi 6.

I suggest that you try Hexagon2.  Try the demo...I got hooked on it.  Hexagon will import ACAD14 and export OBJ, so that is one way to bypass the 65K limit.

I tried ACAD2007 in 3D, but found that Hexagon allows me to do much, much more, with greater ease.  I also found the requirement of having a professional graphics card for 3D ACAD a bit too pricey.  My "gaming" card works OK, but the AutoDESK specs on my graphics card say that my card has a problem drawing fine lines. 

Even though Hexagon displays units to 2 decimal places, it apparantly carries accuracy to much greater degree and will accept input to at least 3 decimal places.  This is fine for my modeling, as I rarely go beyond the centimeter range (we're talking metric here for U imperial types).  Any more detailed accuracy needed, I can always pull out AMAPI 6.  FYI - the same development team that developed AMAPI also developed Hexagon, so the two programs seem to share a lot of functionality as well as structure.

Where Hexagon can be a problem is in using real life coordinates.  I imported a number of layered surfaces in UTM coordinates, and Hexagon just 'choked'.  I moved the model to 0,0,0 coordinates and then Hexagon had no problem.  So I've adopted a coordinate conversion where the center of  a scene in real coordinates is converted to 0,0,0 for VUE and Hexagon.  A bit of a pain but not a major problem, as all is "relative" using the translation factor.  Is this what you mean by "lack of real coordinates"?

I should suggest to the VUE development team to join the OpenDWG Alliance.  I think that the DWG14 format is out in the open anyway.  Since ACAD2007 saves to DWG14... it should be a "no-brainer".