Custom Interfaces in Queued components

[kaldv...@yahoo.co.uk]

I have a queued component that implements a custom inferface, however,
when I try to call any methods on this interface on the component I get
a "method doesn't exist" error.

I've set the custom interface to be queued in Component Services - this
property is disabled for the inherited class (presumably because it has
no public methods itself) - and I appear to get an instance of the
component using the GetObject() call from my client.

Trying to cast the object I get from GetObject() to the my custom
interface type throws a "type mismatch" error however.

Do I have to make the interface implementation methods public for MSMQ
to process the interface properly?

TIA

Craig