Disable autorun completely

A lot of viruses also exploit this "mistake"
The best way is to turn off.
This I'll explain how;
Microsoft has put out various update how to disable autorun. You can check it here


To disable Autorun capabilities, you must install the following updates:
"just click on it"

For Windows XP (KB967715)
For Windows Server 2003 for Itanium-based Systems (KB967715)
For Windows Server 2003 x64 Edition (KB967715)
For Windows Server 2003 (KB967715)
For Windows XP x64 Edition (KB967715)
For Windows 2000 (KB967715)
For Windows Vista-based and Windows Server 2008-based systems must have update 950582 (Security bulletin MS08-038 (Click here) ) installed to take advantage of the registry key settings that disable Autorun.

Once you have download and install follow the instructions;

For Windows Server 2008 or Windows Vista
START -> type Gpedit.msc in the Start Search box and press enter.Under Computer Configuration expand Administrative Templates expand Windows Components
and then click Autoplay Policies.
In the Details pane, double-click Turn off Autoplay.
Click Enabled, and then select All drives and Turn off Autoplay box to disable Autorun.


For Windows Server 2003, Windows XP Professional, and Windows 2000
Click Start, click Run, type ppedit.msc in the Open box, and then click OK.
Under Computer Configuration, expand Administrative Templates, and then click System.
In the Settings pane, right-click Turn off Autoplay, and then click Properties.

Note In Windows 2000, the policy setting is named Disable Autoplay.
Click Enabled, and then select All drives in the Turn off Autoplay box to disable Autorun on all drives.
Click OK to close the Turn off Autoplay Properties dialog box.