Did you receive an invitation or did you accept the invitation and receive definite information on attending? I believe the first invites went out about a month ago for the October (14-16) and November (18-20) dates, but people reported that those sessions filled up very quickly, so I'd guess if you haven't replied to confirm yet, you probably wouldn't be able to attend those.
If you were confirmed and received the acceptance letter and that's what you misplaced, then there are two issues. One is just knowing the times and dates - for the next one (have my son's letter) you're supposed to report by 1715 on Thursday October 14th and it runs until 1100 on Saturday the 16th. I can give you any info on what it says to bring, etc. if you need that as well. However, it also included the letter which allows you (or your parents) to park on the yard on those days, so you would probably want to contact your regional director (you can get their info on your CIS) about getting that if you need it.
You could also contact your BGO if you have additional questions or would be interested in a future CVW if these aren't available.