Hi guys, I bought a ibook off the internet and what do you know...it was networked and what not. So now I do not have the adminstrative password and cannot get a hold of the person who sold it to me. I purchased OS X Tiger and it says to delete the harddrive first then install it. How would I go about doing this? As in deleting the hard drive first that is. I'm new to the Mac world. any help would be great, thanks in advance.