Help restoring MAC to Leopard using Carbon Copy Cloner

Hi, Would appreciate some help in trying to restore a copy of Leopard created using Carbon Copy Cloner.
I created a bootable backup of Leopard, as I am installing Snow Leopard. I checked that the bootable backup I took of Leopard works and then installed Snow Leopard. Not really happy with the Snow Leopard at the moment and so decided to go back to my original Leopard as this worked faster and without issues.

The thing is, I cannot work out how to restore my backup from my external drive to my Macbook. All I can see in the backup location are the main folders, like Applications, Library, System & Users. Is it just a case of copying over the original backed up folders into the main "Macintosh HD" folder and overwrite the new ones there following the install of Snow Leopard?

Any advices appreciated!

Thanks

 

Thanks for the reply.
I get the need to boot off the external drive, what I cannot figure out is how you restore the files using CCC. The only option I can see is restoring an image and when I click on this it asks for the image file, which I cannot find, as I guess I did not actually create an image in the first place?
Excuse the vagueness of my reply, relatively new to the world of MAC's.