I have an iBook with a broken screen, but it still works. I can't connect it to a monitor because I lost the adapter thing :-(. Is there any other way I can connect it to a monitor?
Depending on what kind of video-out options your iBook has, you're going to need some sort of adapter to connect to an external display.
If you have the mini-VGA port, you definitely need an adapter. Some iBooks have S-video out...good for connecting to a TV, but your monitor options are very limited.
Edit: Some info on which iBook models have what ports here.