MSCAL.OCX registration on Windows 7

[Chags23]

When I try to regsiter MSCAL.OCX using
regsvr32 mscal.ocx is get an error that the module mscal.ocx
may not be compatible with the version of windows that I am running.Tells me to check if it is compatible with an x86(32 bit) or x64(64 bit version) of regsvr32.exe

I am using office 2007 on Windows 7
How can I fix this error

 

[GVF]

Search the registry.
If the CLSID appears in "HKEY_LOCAL_MACHINE/Software/Microsoft/Internet Explorer/ActiveX Compatibility" then check the Compatibility flag.
With some ActiveX's if the flag is other than 0 the control will be blocked (not trustworthy).

If IE gets (automatically) updated, the flag will be reset to again block the ActiveX.