Thanks Cheryl.
I looked where you told me to and did not find a DiskUtility Log anywhere. Ideally I would like to know if the computer was used at all on a certain date for anything not just CD, even remotely. Any ideas? Also, I looked in the Console under system log and believe it or not it did not go back a week ago it only had today in it, with a lot of repetitive info, my other MAC goes back to July 22.