I think you guys are talking about the HSC Assistant CDs. They've got about 1000 multi choice questions as well as other stuff.
(Lazarus, we only sell the UAI Estimator to schools because we feel it requires knowledge of how marks are distributed within a particular school. This is the risk with your online estimator, and is a concern to me, although I must admit to having given yours a test run and the results are spot on! Its just that most students don't and really can't know what data is realistic to enter).