I've seen many ways of disabling autorun in windows.

Never been sure of which is the one to rule them all... but here they are... for Win XP or Vista

A.- Create the following value

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\IniFileMapping\Autorun.inf]

@="@SYS:DoesNotExist"

http://antivirus.about.com/od/securitytips/ht/autorun.htm

B.- Disable autorun for all drive types

HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer[?]

"NoDriveTypeAutoRun"="FF"

http://autorun.moonvalley.com/enable.htm

...Also read from microsoft:http://support.microsoft.com/kb/953252