nHancer NVIDIA Replacement profile editor
 

The programmer of this handly little tool was very unhappy with nVidia's own control panel, especially with its game profile editing module. Therefor he started to write his own profile editor, which uses the same mechanism as nvidia's own control panel (driver registry and nvapps.xml), but is much more userfriendly and offers a lot more options.

http://downloads.guru3d.com/download.php?det=978