This feature has been published as of Feburary 25th and is now available on gradecalpoly.com. You can easily see the books for your schedules by clicking the "Find Books" link on the top of the schedule. Or you can search by class/CRN on the "Find books" page.
I'm pretty pleased with the success and accuracy of this feature, I hope it proves as useless as it potentially can be.
The Winter 2005 book list is currently the only one available, I will have the Spring 2005 list available March 15th or so. Hopefully in the future I can get the book list earlier then 2 weeks before the quarter starts. Shoot me back some feedback if anyone has any to give.
Time to start working on the next big thing... too bad I'm almost out of ideas.