Brande,
I have been a SCWI sience May 2004, I can tell you that the exam has only about 2 questions that deal with actual inspection, the remaining questions deal wiht cost of quality, ISO 9000, NDE, Lots of metalurgy, Code interpertation, and procedure writing (NDE, Welding and Inspection). As for study material, ger as much of the AWS referanced materials you can and read it over and over.
Good Luck!