Let me save you some time and effort. This won't work. The iBooks used either the G3 or G4 CPU, which will not run Windows directly. So your project is already doomed to fail before it's even begun. Only MacBooks and MacBook Pros have the Intel chips needed to do this.

The only way to get Windows onto an iBook is via some kind of virtual machine software to act as a translator, and it will be slow. You'll be lucky if apps run at 80% of native speed.