Seeking a good SweetFX.
Guru3D.com is the best source to get SweetFX.
Version 1.4 was just released a few days ago:
http://www.guru3d.com/files_details/sweetfx_shader_suite_download.html
I haven’t tested it out yet, but if you run into problems here’s the link to 1.3 which I have been running for almost 6 months without issue:
http://forums.guru3d.com/showthread.php?t=368880
Quick tip: remember to disable anti-aliasing in-game, otherwise SweetFX’s improved AA won’t kick in.