I'm glad you are buying the Applied Analytics Using SAS Enterprise Miner 5.3, it is a good resource. I looked at the table of contents for the other book and was not impressed with it, as far as helping you prepare for the certification exam. The methods on the exam are decision trees, neural nets, and regression. I didn't see those items specifically called out in the table of contents. Also, it covers a lot of other material not on the exam.
If your school doesn't have an Enterprise Miner liscence, and you don't want to use On Demand for Academics, then I don't know how you can access the software. Maybe there is a department (statistics, computer science, or other) that has a liscence. I don't know how much the On Demand option costs, but it may be worth it to prepare for the exam.