Quote:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\Explorer
Under this key, is the following value:
NoDriveTypeAutoRun = 95 00 00 00
This value is a single 32-bit number. When Windows is installed, the default value is 0x00000095. Only the low bits, 0 through 7, are used. The remaining bits are reserved and should always be set to 0. Each of the low 7 bits corresponds to a possible return value from the GetDriveType function. This function returns one of the values listed in Figure 3.
A value of 0x00000095 is the same as 10010101 binary. This means that bits 0, 2, 4, and 7 are turned on. The bits that are turned on represent the drive types for which AutoPlay is disabled. In this example, AutoPlay is disabled for unknown drives, removable drives, remote drives, and some undefined types of drives. One thing to note is that on Windows NT you must log off and log on again for this AutoPlay registry change to take effect. On Windows 95, the change takes effect immediately upon changing the registry value.
Other than that shtirliz' post is right - policies.