Multisampling and Polygon Smoothing

Hi,
Of course I can set 4x FSAA from the advanced properties panel. But it’s 4x multisampling, not supersampling. nVidia documentation says that coverage-blending AA doesn’t work with multisampling, probably due to the way the samples are taken. But I’m sure it works with supersampling, had it working on GeForce2Ti - well, for the coverage-blending had a tweaked driver and for the supersampling an additional registry setting…
On old nVidia drivers, 3x.xx I think, it was possible to enable 16x FSAA (4x multisampling and 4x supersampling). I think Quadro FX have it in the FSAA panel, but I’m not going to get one, they are damn expensive (only going to get a 6800 GT). I am not aware if new drivers and tweaks (RivaTuner) can do 16x FSAA. If they can, then pure 4x supersampling should be doable, too.
Tarek, sorry for hijacking the thread…