Reverse clone

I'm trying to copy my Lenovo X60 hard drive onto a new, larger drive. Several people have suggested putting the new drive into the laptop and the old drive into an enclosure and booting from the old drive using a rescue CD. I downloaded the Ghost software and an iso file when I purchased Ghost. Is it the iso CD that is being referred to, and if not, what is the software and how do I find it?

 

Thanks

 

John