pretty easy stuff this , rename the *.ISO file to *.raw
then drag and drop it , if that wont do....then set it to mode 1 (raw) ,
if its a PSx cd or such it needs to be DAO and MODE2.
anyway for normal iso's (.iso , .bin , raw etc) use TAO and Mode 1.
btw read the manual, infact its pretty easy and also instead of burning the iso u could use VoodooX and unpack it straight to hdd (ie if its like an old cd32 game or whatever (2-30 megs) (seen alot of theese questions after BTTR released some iso's for free.
good luck