Thanks so much. Went with the Oscar prehacked USB kit. Seems like it was designed for the solder-challenged like myself.
They have worked perfectly for me, on every application I have ever tried them on.
I've got, or have built a bunch of wheels, spinners, trackballs, etc..., and they all just hook up and work.
The only issue I have ever run into is that some of the optic cards I've hooked it to have had the sensor wires backwards on them, as compared to Oscar's own optic cards.
When this happens, it's a simple matter of turning one header around on the mouse hack, to swap the direction.
Oscar has directions for doing that on his website.