Adapter for parallel-port???

Hello! I have purchased an Apple Studio Display to use with my PowerBook G4 and my old Blue/White G3. Unfortunately I can't seem to use it with my Blue/White G3 which I have my wonderful and expensive Agfa Arcus II scanner attached to, and have already ditched my old dinosaur monitor. The scanner has a 25 pin parallel-port that I would like to be able to use on my PowerBook G4. Any ideas would be GREATLY appreciated! Thanks!