How do I remove the double flash from Vivitar 8025?

On some cameras (like sony) there is a very fast double flash .. you see only one .. the first sets up the shot the second takes the picture ... its not likely that your vivitar has this feature so i am thinking that your "noticable" double flash is caused by "red eye reduction" being turned on .. on my vivitar (dc8600) the flash mode including red eye reduction is selected by the 4 way switch .. by pressing the right tilt you can cycle thru all the flash modes ... that includes no flash, forced flash, automatic flash and red eye reduction..maybe other modes as well .. the flash is in fully automatic mode when no sysbol appears on the screen .. thats probably where you want to be ... that will flash only once per shot and only when needed .. ..