HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
http://www.microsoft.com/technet/prodtechnol/windows2000serv/reskit/regentry/93502.mspx?mfr=true
0x1 Disables AutoPlay on drives of unknown type.
0x4 Disables AutoPlay on removable drives.
0x8 Disables AutoPlay on fixed drives.
0x10 Disables AutoPlay on network drives.
0x20 Disables AutoPlay on CD-ROM drives.
0x40 Disables AutoPlay on RAM drives.
0x80 Disables AutoPlay on drives of unknown type.
0xFF Disables AutoPlay on all types of drives.
