the best bet you can probably get is with DVD Decrypter as aqsg72 said because its practically idiot proof [no pun intended].
1. find your .iso (also supports others like .mdf, etc..)
2. insert your dvd and choose a speed if u want
3. burn
4. your done
google it.. you will find older versions.. the newest one is 3.5.4 or something.. gL