>There is a "DMSWinsockControlEvents_SendData" method though. I was following Hugo's example of how to use the IMPLEMENTS and so forth. Guess I'm not clear on how that works. In the code that works that he posted, all the methods like "DataArrival" were prefixed with "DMSWinsockControlEvents_" though the calls were only to "DataArrival."

When you implement an interface, the names do get prefixed like that. However, it would be very unusual to directly call one of those methods. The methods are event handlers that fire automatically when the specified event occurs.

What are you actually trying to do here?

Tamar