hi everyone i have a few questions and was hoping someone could help or give some advice here. i am selling my macbook in the hopes in getting an Imac. what im wondering is what is the best way to clear the info on my computer? would it be the discs that came with the machine to reinstall the OS? or should i use the 35 times disk write that is in the utilities. or both methods even?? any help would be greatly appreciated, thanks!