|Welcome back bob.|
When using nLite you first copy the contents of your backup CD to a temp file so look in your temp folder.
I think the file will be 300/400MB in size. So you could sort files by size to find it.
BTW, Acronis can make an image of any partition on your drive. I think the version you have will also perform incremental backups. That means it writes ONLY what has changed since the last full backup. That will require re-writable media like a hard drive or DVDRW.
IMO it is easier to make periodic images and then save the incremental backup to a file on CDR for instance.