(Thanks again to everyone who took time to answer past questions!)
Here I go wearing the welcome mat REALLY thin with a third question in as many days...
I tried connecting an old IBM monitor up to my new Powerbook, you know, just to see what would happen. Well, to my surprise, it worked quite well!! I've since disconnected it, and my Powerbook screen is now a little messed up. The icons stop about 3 inches from the bottom of the screen, and my Control Bar (or whatever it's called on English Mac systems) is also up a few inches from the bottom. The desktop pattern shows up normally, though. When I change the screen size with the monitor control panel, the icons and Control Bar still show a ways up from the bottom... I've cleared the pram, but no go. What gives?
Anyone have any ideas? Sure would like to get things back to normal!