Hi, I just got a 12 inch 1GHz Powerbook from a reseller. I don't really know much about apples, I've had windows until now. I LOVE my powerbook and have been wanting an apple for a very long time now. I was very skeptical about buying from a reseller but really didn't have a choice because of budget. I'm a student and don't have a job. Because I had gotten my computer from a reseller and not directly from apple has made my fear grow that I was ripped off. Anyway, don't want to bore you with my sad story and all. First time apple user and I have a few questions that might probably be very silly. When I go to network, there are about 10 servers connected or something. And then... they just disappear! What does this mean??? Is my computer connected somehow with others? I see like, Chris's computer, or Denise's computer... etc. Is this normal? Can others see my server? And when I run iTunes, there is a link or something on the right side as shared files is there any way to turn this feature off? Dont worry there are only two more senseless, silly questions. How do I download updated patches from apple? Does it even exist? (Thinking windows here)... And the grand finale! I have cable, and I am always connected to the internet. Should I buy an antivirus? I am extremely paranoid of getting a virus and if I do, will not have the money or the knowledge of fixing the problem. Plus, will I even know I'm infected? Well, thanks for reading my sad sad post. I feel very little. I feel I knew a lot of my PC, and though apple is easy to use... it's still hard when you've never operated it before. And hence, feeling little.