Handle in Visual C++

Many thanks for reading this guys,
I'm using Visual Studio 2008, OCC 6.3.0.
When I try to use Handle, as follow

Handle(Geom_Plane) myPlane;

VS2008 does recognize "myPlane" as "Handle_Geom_Plane" which is expected
but when I try to use myPlane->... it says "type could not be resolved" and I cannot access any function of Geo_Plane.

I really appreciate it if you guys can suggest something...
Many thanks again