Hi. I'm new to macs (and to this forum!) and am hoping someone can lend me a hand... I just bought a g4 powerbook about 6 months ago. I've been using it for school and have downloaded some music (about 5 gigs), but not much else. Now, though, I get a pop up message saying that my hard drive is full. After looking--it is! I've used 74 gigs. But I have no idea how. Is there a way to easily see what is taking up so much memory? Has anyone experienced anything like this before?