Hi spicegirl,
I don't have an action, my B&W conversion process is more manual, and can vary from image to image.
Here's a thread I wrote up last year about my B&W workflow. Not much has changed since then, I still use Lightzone quite a bit for B&W work. One new tool I've been playing with lately is Nik Silver Efex Pro, which can do a pretty nice job on the initial conversion, and has some interesting presets.