missing iso archive!! help!

hey ive just downloaded the godfather game (iso file) and im trying to extract it with winRAR but it keeps saying that theres no archive file for it to extract. i think ive got the file somewhere but i cant find it. is there some program that i can get that will find it for me? or do i have to just try again on the download?

Start>Search>click on "All files and folders" and type what your looking for.

may be you forgot to download these missing archieves or you downloaded it from unrecognized tracker
check it again