I have a few questions about some settings. 1. I'm wondering what my custom setting should be for Target DVD size?? another question under preferences File I/O what does the overlapped I/O option do? and under that option should I have the read 32kb blocks checked? and what does that do? Also I was wondering if I un-checked the run backup in low priority mode would help get a better burn.?? and would it help to get a better burn if I turned off the burn at lest 30mm (DVD+R/RW high compatibiliy mode option off? seeing how I am using DVD-R's and under burn setting I was wondering what the book type DVD-ROM option did?