Kurgan said:

You only need to "Mount an image" if you're going to apply the "VIDEO_TS_fixed.rar" files to the ISO to burn with ImageBurn (that's for the DVD9 ONLY).

Daemon Tools is an easy program to use. You install it, run it, and then right click on the icon and it has the option to "mount" an image. You choose the ISO file and it turns it into a "virtual" (fake) dvd drive, as if there's a disc in there, but there isn't. Then you go to that fake "drive" and copy and paste the files onto your hard drive. Unrar the "fixed" files, and drag them into the same directory so they replace any files there. Then you burn it with Nero like you would any other DVD-Video.

But the Purist Edition needs none of that, you just double click on the rar file (winrar is installed so it'll automatically work) and extract the ISO from it. Then you fire up Nero and open the ISO and it's ready to "burn" (click the burn button, with your Dual Layer media in the proper drive of course).

Sorry, but what are the "VIDEO_TS_fixed.rar" files again?