I've had several emails asking me about how I set up my strobe and speed ring combo. I have several speed rings in my arsenal, you don't need an expensive one to do this. This photos show a very inexpensive speed ring from... hell can't remember who's this is, it very cheap, but works.
I use a standard umbrella adapter with a 1/4 20 male post on it. The speed ring has 1/4-20 threads on one of the sides, all of my speed ring have it so I assume that they all do. I just screw the umbrella adapter into the speed ring. Here's another look at, just a bit closer.