How do I do this? (This question directed to anyone who HAS done it or feels comfortable enough with the procedure to run me through it) I'm running Tiger at the moment. I've read that the $29 upgrade disc works to install Snow Leopard onto Tiger also. I want to clean install and only back up music, videos, pictures, email, and personal documents like work. I do not need any of the applications that I've added to my macbook pro over the years. I do not have time machine. Will I lose all applications from safari through ichat and itunes if I clean install or are those applications on the Snow Leopard install disc. No website or thread has the steps to clean install SL onto Tiger yet. Thanks in advance for your help.