Windox XP Mouse wheel error when using 2nd monitor placed to the left of primary monitor

[Paul Whitfield]

I have a windows XP notebook with an external monitor. The external 
monitor is placed to the left of the notebook monitor configured as a 
"secondary display"

When an emacs frame is on this monitor (2nd monitor to the left of the 
primary), then
the mouse wheel does not work and the error
<nil><mouse-wheel-up>
is displayed in the mini buffer.

The mouse wheel works correctly if the frame is on the primary monitor.

Reconfiguring the monitor to be on the right of the primary monitor
fixes the problem

In GNU Emacs 22.0.50.1 (i386-mingw-nt5.1.2600)
 of 2005-12-18 on NEUTRINO
X server distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --cflags 
-Ic:/Programme/GnuWin32/include'

Regards

Paul

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