How to avoid conflicts with Serial.sys?

Hi!

I’ve developed a NT device driver which takes care of a touch screen. I
used the sample in the NT ddk, sermouse, and modified it to fit in with the
protocol from the touch screen.
This all works fine but when I check in the Event Viewer I can see that the
Serial device has detected a conflict with my driver. To see if it was just
my driver I tested the sermouse driver too,
but this also gives a conflict in the serial driver.

Now to my questions:

  1. Should it be like this?
  2. Is there a way to avoid it?

Please help me out here!

/Dan Persson