How to burn wii Games mac

[hyroma06]

This is exactly what i do:
I search the Name of the game in Mininova(wii Animal crossing),Download the torrent,wait like a day until its downloaded.Then i unzip it with Unrarx then i have a .iso file(animal(compress).iso)
When i click on it,it sais:No mountable file systems it opens with DiskImageMounter (i already know that this is probably not suppose to happen)

After that i Burn it with Disk Utility but it gives an error at the end
In disk utility it sais that the type is unnatched Disk Image

Can someone explain to me what im doing wrong and what im supposed to do?
Im obviously using a mac,so keep that in mind