Object Type

Hi,
Does anyone know the syntax to test for an object's type?

I'm writing a VB function that will do different things to an object that is passed in depending on it's type.

I know ObjectInQuestion.GetType will return the type but how does one test whether its a online or oncurve or on3dpoint etc?

Select Case ObjectInQuestion.GetType
Case Online

Case On3dpoint

End Select

The above returns an error.

Thanks.