I can't help with SLI, but you need to use "00000045: AA & HDR" in the AA Compatibility tab.
Edit: Might want to have a look at this thread.
http://forum.nhancer.com/showthread.php?t=1602
Quote:
Originally Posted by sterik01
What theme or taskbar is that?
http://krissirk.deviantart.com/art/S...or-7-148071499
I modded it a little bit because I didn't like the taskbar buttons.