Just go to Start -> Run -> type in "regedit" (without quotes). Be very careful when you are using this program. Making a wrong change can trash your system. Don't change anything that you don't have to! You'll see 5 folders (hives) on the left side of the editor screen. Navigate your way to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdrom by expanding these folders until you get to the right one. Once you have the Cdrom folder highlighted, you should see "autorun" listed in the right pane of the editor. Double-click "autorun" and change the value to 0 (zero). Exit regedit. You're done 🙂
BTW Brazen, as far as I know, that method only works in Win98 or ME. There is no Settings tab for my CD-ROM in Win2K's Device Manager.