Not possible without a bunch of converters. ADC Studio Display is DVI-only (digital display,) and the iBook G4 is VGA-only (analog display.)

You would first need the DVIator (or the later Apple equivalent - expect about $100,) to both power the display and convert the ADC connector to a DVI connector.

Then you would need an *ACTIVE* VGA-to-DVI converter, which run about $300.

Finally, you would need the mini VGA-to-VGA adapter, to connect to your iBook.

Not worth it.

(Also, this only applies to the flat-panel ADC Studio Displays; the CRT model cannot be used with *ANYTHING* other than a native ADC computer.)