Marty, are you sure about that? I think I got correct exposures using A mode on my D2x and SB-20 (A mode on both) - just as long as I used the right ISO and aperture. I would think that any of A/S/M/P modes would work fine with A or M mode on the flash.
_____ Brian... a bicoastal Nikonian and Team Member
My gallery is online. Comments and critique welcomed any time!