Quote Originally Posted by Quietus
Yes, I've put it on 4xS which is the max for my card. Not sure if it is working though.
If forced via the driver, its very likely it is working.

The easiest way to confirm is to compare low-res screenshots(800x600 will be good) at high zoom. So take a screenshot of a something with straight edges, but at an angle, an Onager or Seige Tower should do it, take one screen shot with AA forced, take another without it forced, load them both into photoshop or PSP and zoom right in on the edge of the Onager.

It will be very apparant if it is working or not after doing that.