Space objects evenly?

 From:  paulrus
5695.1 
I searched for this and found some discussion, but no solution.

I have 8 objects that are similar in size and shape (basically some "charms" for a necklace design). I want to space them evenly so I can add a ring between each one to connect them together.
They're already built, so I don't want to use Array. So is there a way for me to easily separate them by the exact same about of space?

Thanks,

Paul