Steep - that site is still down but will keep checking over next few days.
Nixtoo - not sure on the voltage but it has a hot shoe connection and a lead, my camera doesn't have a hole for the lead, the flash is very old so at the moment it doesn't work at all . The flash fires if you hold down the button so that works.
John-oh not sure that it would be compatible with the equipment needed to do that but its a good idea and i will look into it if i cant get it to work on the camera.
i might give vivitar a call after the bank holiday.