You need to visit
FlashZebra.com ...for cables and just in general.
Also, there's a Wein optical slave that ignores redeye preflash. Google Wein.
You shoule visit
Strobist... that group's central obsession is off-camera use of small flashes like Vivitar and your Metz.
Your Topic is incoherent. If the system will let you fix that, do it.