Hello, I purchased a Powerbook G4 with Mac OS X 10.4 Tiger on it from a friend. Laptop is two months old. I would like to remove all of my friends settings, docs, user login and laptop name. When I go to about this mac, I get the name of my freind as the owner. I do have his password, so I was able to change the login ID and password to mine. I now want to get rid of the message at the top of the about this mac screen and also free up some hard drive space. Any help is appreciated.