Receiving own written com port data

[od ananzi co za]

Hi Guys, I have an app in which I open a com port (9600, 8, N, 1, N (or H/W)) in overlapped mode to an external device. Whenever I write data to that port all data I sent is "echoed" back to me. After that I do get the device's data as expected, so the device is definately receiving the data. The device also does not have this "echo" capability, so it is not the device that is sending my own data back to me, so the problem lies somewhere in the driver, etc. Is it perhaps the way in which the port is setup and opened ? Or it this a known issue in Windows serial driver ? Any other ideas ? Regards OD