The CD autorun issue is easily resolved: click here for the Whirly Wiry Web site which has its shell.exe program for download along with instructions on how to use it. It's about the easiest and most comprehensive free solution I've found so far.
The answer to your second question is also simple. No, there is no way you can prevent your CD from being duplicated without a lot of very technical input which can still be bypassed, given enough determination.
For image protection I suggest you watermark each picture. This may look slightly less impressive than an original image but it will prevent anyone running their own copies off since your or your business name will be embedded into the image.