Save States and the Command Line?

[CobraCommander]

I wrote myself a rom launcher application and launch the emulator using the command line, and I've been able to get most of the things working, but not save states. The only switch I see that could have something to do with save states is -ssv0, but this doesn't seem to do anything. Is there some other switch I'm missing that I should be using, or is there just something wrong where I can't use save states? Also, I'm using the -nogui switch, because otherwise the emulator just sits at the gui instead of running the rom specified with -loadbin.