mouse pointer probs ,flt sim 2004

my problem when in flight deck mode the mouse pointer flickers so fast it is in pos to fix on switches etc,this only happens when cockpit is up and runnining.any other time all is well, renewed mouse=microsoft wireless laser 6000 made no diferance,installed xfx geforcepcx6600extreme g.card
there tech say they have never heard of this prob, microsoft say the same, I have tryed every thing to no avail can any one help.

Did you check this?

http://support.microsoft.com/kb/309703

Also be sure that you have the latest direct x drivers instaled.

http://www.microsoft.com/windows/directx/default.aspx

Also if you have a Micrsoft Mouse there must be a program call Intellpoint running on background.Try to disable it and check what will happens.