You don't mention what state you're in but usually your state board's website will have a link to the Ethics course materials that you can purchase online. For me, since I am in IL, I went to ILBOE's website and got my materials from there. If you've already passed all the CPA exams, you will most likely find this to be easy. You will, however, need to spend a few hours going through the material and finding answers to the MCQs.
AUD - 79
BEC - 80
FAR - 83
REG - 78
Ethics - 97
"If it were easy, everyone would do it."
"Hard work, perseverance, faith, blessings."