There is nothing more annoying and an auto running cd lol
i hate it myself too, i disabled the autorun on my dvd to stop it from happening, try this and see if it helps...
1) Click Start, Run and enter GPEDIT.MSC
2) Go to Computer Configuration, Administrative Templates, System.
3) Find the entry for Turn autoplay off and change it to Autoplay off
This should stop it from running as soon as you enter a CD, to re-enable it just go through the steps again and change to Autoplay On.
Let us know how you get on.