problems with disc juggler

[Darean]

I have ecco on my computer, downloaded disc juggler opened it up and it gave me an aspi error..I read an faq and downloaded something else and that problems gone and its fine..but when I load the image I cant press the start button(to start the burn) which I hear is if its not compatible with your cd writer..is there anything else I can do with it or do I have to change it to another format and burn?(and what other programs can burn it to be bootable?) thanks