Sounds like what you are really talking about it the echo from a modem, the serial port itself has no echo. If I am right it all depend on the modem you are using. Most "Hayes" modems use &E0 and &E1.

Thank you.

Thats the very information I need. How do I do that.

very funny...now try to be helpful

I am trying to find a class to get the system info (i.e. memory usage, disk space...). I have seen several references to a System.Mangament class but its not list in the .net MSDN help files and doing a "using System.Management;" creates an error. Any ideas.

Use a delegate, or pass the form object of the parent to the child