This is from your PC Help and Support Section:
WARNING: If you use Registry Editor incorrectly, you may cause serious
problems that may require you to reinstall your operating system. Microsoft
cannot guarantee that you can solve problems that result from using Registry
Editor incorrectly. Use Registry Editor at your own risk.
If there is a CD-ROM changer attached to your computer, you may want to
disable automatically running CD-ROMs (the automatic running of a compact
disc [CD] or the automatic playing of an audio CD-ROM). If automatically
running CD-ROMs is enabled with a CD-ROM changer, each time that you insert a
new CD-ROM into one of the trays, Windows cycles through every tray in the
changer.
There is no option to enable or disable automatically running CD-ROMs in the
user interface. To enable or disable automatically running CD-ROMs, you must
edit the registry:
Click Start, click Run, type regedit in the Open box, and then press ENTER.
Locate and click the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CDRom
To disable automatically running CD-ROMs, change the Autorun value to 0
(zero). To enable automatically running CD-ROMs, change the Autorun value to
1.
Restart your computer.
NOTE: This method disables automatically running CD-ROMs. If you want to
disable automatically running CD-ROMs depending on the CD-ROM that you insert
in the CD-ROM drive, you can press and hold down one of the SHIFT key while
you insert the CD-ROM.
Additional Information
There are two other registry keys that can affect this functionality:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NoDriveTypeAutoRun = 0x00000095
-and-
HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NoDriveTypeAutoRun = 0x00000095
The correct value for each is 0x00000095.
