Your welcome and good luck. If looking for a new burner I suggest the BenQ1640 or BenQ1655 burner. Do a forum search for them to read what others have been saying.
The BenQ DW1640 (and from what I understand, the DW1650), are NOT riplocked ... in fact, according to the good folks at CDRinfo:
Well I'm not just in love with my BenQ1640 burner, I think I want to mate with it now!!! LOL Thanks for that info Catfreak... I didn't know that.