Hi,
I'm an AutoIT programmer with 8 years of experience in developing both win and web automation scripts. I have downloaded the setup application and it is an IE window so I IE attach and other IE methods your work on it, just as you suggested.
I have experience in web automation and have completed so many web automation projects. I would like to discuss more about your project. I'm available on Gmail and Skype 9 am to 9 pm (IST) to discuss more about your project.
Kind regards,
Pooja.