Get winrar
Then open winrar, and extract the file (should be in ISO, or MDS) to your desktop, by dragging it.
Now, get imgburn. Google it.
Install, and open.
Pop in a blank disk (DVD+R works best)
Burn it
Put it in and play/install
If you get an error, you will have to mount with Dameon Tools (Google once again)
This is the method I use, it should work for you.