I have recently switched to a mac after using PC's for about 15 years. I know that on a pc I would frequently run norton and disk defragmentor to make sure my computer was still in tip top shape. Is there anyway to do this for my new G4? When i install a program is there a way to uninstall or do i just delete all the files? I know my questions may sound trivial to long time mac users but i just wanna make sure i am doing everything right. Any responses would be greatly appreciated.