If you click that it will bring up another box you can type in, just bellow the original post. Click add reply when your done.
Well I'm pleased I could be of some help to you.
To get your iBook online, you just need to follow the same setup as your iMac. I am going to assume that you have a modem and it's attached to your iMac via the Ethernet port.
Some modems allow two or more Ethernet connections, but in most cases one. You could buy a Ethernet splitter and a long Ethernet (RJ45) lead to run to your iBook's Ethernet port.
The only other alternative are those that I've already suggested. Brand band dongle being your best option if you can't have a wireless router. This makes it wireless, allowing you to take the iBook around your home and still be connected without any leads.
I hope this has been of some help to you.
Best of luck.