>Why do you want to sub-class it in the first place? What functionality did you want to add?

Simply because I subclass everything. If I need something in the future, it will be ready.

>Sorry it's not VB code - I feel clumsy writing VB.NET since I'm not totally familiar with the syntax so I provided the sample in C#. Maybe someone can

It is ok. I will translate it.

Please, don't add those reply customized quotes. Simply leave the engine formats the content as is. When you keep the auto quote on, all will already be there so I know what is a replied quote and what is not.