http://forum.nhancer.com/showthread.php?t=868
"The beta version of nHancer 2.5.0 is available now!
Important notes
* This version requires .NET 3.5!
* It's only working with GeForce driver version 185 and later!
* Special handling of cards prior to the G80 (8x00 line) has been removed. nHancer will still work with older cards, but not all Anti-Aliasing options will work correctly with them.
Please also note that this an early beta version that's primarily released so people can use nHancer with the latest GeForce drivers."