I recently got one of the new 12" powerbooks and I've been pouring over this forum and other sites trying to learn what I can. While looking in threads for new programs that I might find handy I saw many people talking about Tinkertool. This seemed right up my alley since I'm a bit of a tweaker myself. Anyway when I went to the site I found that there was another program called "Tinkertool System" that I hadn't seen mentioned and I was wondering if anyone had any experience with it and if it's useful? Also is it likely to hose my new machine since I'm new to OSX? I also found a program called CLIX in the new Macworld mag. It's a command line interface that has some common commands already in it. Anyone familiar with this one and is it useful to someone new to the command line? Any help would be much appreciated.