Help with ISO file

I went to a site to download a program and it downloaded a zip file so I opened it with winzip 10.0 and it is now in ISO format. What do I need to do in order to make this a file that I can open to use this program? Any assistance will be greatly appreciated. :doh:

Have a look at the site where you downloaded it from. Legitimately-distributed software will have instructions on what to do with the ISO file.