Nice SweetFX setting Ziming.
I have an alternative profile I made if anyone is interested. I made this for use on a large LCD TV. I think the CRT effect actually makes the image look even less like a CRT screen when it's heavily overdone. This is a more subtle change, and really nice looking in action.
My screen resolution is at 1920x1080 for both the PC monitor and TV. The CRT effect will look incorrect if you are running NullDC at a different res. I'm also using x2 Supersampling, but if you struggle to run with it, just enable the FXAA option in the SweetFX.ini, this will do a nice job of sorting the remaining jaggies as I have already tweaked it to have a similar effect as the SSAA.
The images below look weird when not viewed at native scale. Please click for full-size.
SweetFX + profile: http://www.mediafire.com/download/ju0o2z1gu004pe0/SweetFX-1.4-_CRT_SHENMUE.rar
''PLEASE NOTE, I have not tested on an updated version of SweetFX, it might not have the same result.''