Well I used DVD Decrypter (using file mode) and here's what I got:
some files ( IFO BUP VOB) resulting in 5,240,240,128 (4.88 GB)
I can't burn these files using Nero or any other thing to a DVD-5.
But I can burn the image with Alcohol and can play it on a stand alone dvd player.
Can anyeone guide me how to burn the dvd so that I can play it on PC too?