Hi yuris, this is a rather complicated one, so you will have to find out a bit more information for me if I am going to be able to help.

1. The pictures may still be on the camera's flash memory card, even if you have deleted them, so it may be possible to recover them that way. Depending on the equipment used the card's MMU may well continue to add data into unused space. This technique is designed to prolong the life of the card by ensuring that the same transistors are not used repeatedly.

I would suggest looking at the memory card with a recovery tool. One might even have come bundled with the software.

2. I would have hoped that the pictures were downloaded to the HDD of the PC BEFORE the original CD was burnt. In which case they should still be there, or once again, should be recoverable using recovery software.

3. When you finish a CD burn in Nero it asks you if you want to save the ISO (disk image?). If this was done then it will be possible to burn another CD from this.

You might like to look into those possibilities?

I have not tried this technique, but it may work:

4. Get roadkil's "unstoppable copier" and copy everything from the CD to the HDD. It does this on a file by file basis and may well copy the "hidden files" (they are still on the CD if it is write only). That should make them accessible again.

http://www.roadkil.net/unstopcp.html