Automating A fully flash website

Hi, I am having trouble trying to automate a flash website (www.mycokerewards.com) basically my brother doesn't want to type in each code he has each day (limit 10 a day) so I told him I would "try" to make a program that did this automatically...

my biggest problem is that when I load the flash file in it's own component (just the flash file) then it gives me an "undefined" error, if I could remedy that, then I would be set!!

otherwise I just need to access it via webbrowser object and change variables hit sign in, enter values hit buttons...etc...

I have looked...A LOT for this info, most of it is fuzzy...

Thanks.