Crystal Report in Ax2009 with OS Win7

Hi,

We are having problem in opening crystal report in Ax2009 if we are using Windows 7.

Using Windows XP, we do not have any problem.

Hereunder is the error.

           "Unable to create ActiveX control.

            Crystal ActiveX Viewer Control 11.0

            (ClassId: {460324E8-CFB4-4357-85EF-CE3EBF23A62})

           Is not found on the system, please check if the control is correctly installed."

Can anybody knows what we need to do?

Thanks

Pia