VToolsD Port Driver for Win 98/ME

Hi

I have a virtual COM Port driver, which is made from VToolsD serial code.

I want to fail SerialPort::Write(), SerialPort::EventNotification()…etc
functions. As per the VToolsD document, I can return FALSE from these
functions, if I want to fail the funtions. But, if I return FALSE from
these functions, system becomes unstable.

What are the thinngs to be done, before returning FALSE from these
funtions.

bye
-Sanesh