Don, the absolute first thing you should check if you loose both engine generators is look down and make sure the engines are still running...
It may sound obvious, but off the top of my head I can think of multiple cases where a dual engine flameout or thrust loss was initially diagnosed as a loss of electrical generation. In one case the pilots never did figure it out (the engines self recovered) - we didn't know the engines had quit until we looked at the DFDR...