How To block or Disable Autorun.inf file in xp,7 using (Regedit)

Simple way to disable autorun.inf :

Follow this link and download the msi file:    http://go.microsoft.com/?linkid=9741395

Fix it yourself-Manually disabling the autorun feature:

To disable Autorun yourself on operating systems that do not include Gpedit.msc, follow these steps:

Click Start, click Run, type regedit in the Open box, and then click OK.

Locate and then click the following entry in the registry:

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\NoDrive

TypeAutorun

Right-click NoDriveTypeAutoRun, and then click Modify.

In the Value data box, type 0xFF to disable all types of drives. Or, to selectively disable specific drives, use a different value as described in the "How to selectively disable specific Autorun features" section.

Click OK, and then exit Registry Editor.

Restart the computer.you can re-enable the autorun feature :

Follow this link:  http://go.microsoft.com/?linkid=9743275