How do I reverse this Windows XP setting?

When inserting a music CD/Blank CD or other devices Windows XP gives users the option of specifying a certain action to be carried out every time that device is inserted eg running media player etc I’ve ticked some boxes on the option screen so it no longer prompts me but now I need to change them. How do I do so?

Bring up Windows Explorer, right click on your CD-R drive letter, Properties. Select AutoPlay tab. There they are.