Okay. I'm a relatively new MacBook user, so I hope the problem is me, and not the computer. Last month, my hard drive died. I just replaced it and reloaded it with the OSX (10.4.11) disks I'd purchased earlier from Apple. Everything seemed fine, except I cannot locate Time Machine among the applications. It's not listed on the system profiler either. It worked fine earlier when I'd bought and loaded the same OSX package on my old hard drive. Without TM all my data is sitting unretrieved on my external hard drive. Help please!