interface issue

[SsSam]

I have dominions 3 loaded on three different computers.
This makes it easier to take multiplayer turns wherever I am.

On two of these machines, the mouse does not appeared synchronized with it's actual position on the screen. Different mice. Different video cards. Different resolutions.
It's usually a matter of 10-20 pixels or so. Not much of an issue till I try and set up a complicated army maneuver.

Am I the only one suffering from this? Is there an easy fix? A hard one?