Even as a long-lapsed mil pilot, you will find that it will all come flooding back to you. I would recommend the Trevor Thom books as you might find the AFE series (Jeremy Pratt) a bit "warm and cuddly". Admittedly, Thom series can be a bit dry but all the information is there. The AFE series are beautifully laid out and presented but personally, didn't find them as good as Thom.
Another book to recommend is Questions and Answers for the Private Pilot by (Holden & Brett???). The standard of their questions is slightly higher than the real thing IMHO.
As long as you cover the information in the books, you should have no problem in passing the exams. At least with books you can take them anywhere, whereas the CD-Rom method is a little less portable!
Cheers
Whirlygig