I have to double check but I think MS disabled autorun in service pack 3. But just in case lets try a few things
    Click Start, and then click Run.
    Type regedit, and then click OK.
    Locate and then click the following registry subkey:
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CDRom
    Double-click Autorun and see whether a zero or a one is displayed in the Value data box.
        If the value for Autorun is 0, right-click Autorun, and then click Modify. In the Value data box, type 1, and then click OK.
    Locate and then click the following subkey:
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
    Double-click NoDriveTypeAutoRun to see its value. If the value is 0xb5, the AutoRun feature for CD-ROMs is turned off. To turn on the AutoRun feature, follow these steps:
        Right-click NoDriveTypeAutoRun.
        Click Modify.
        In the Value data box, type 91.
        Select Hexadecimal, and then click OK.
    Exit Registry Editor.
Shane