Moving Full Screen Apps Between Displays

Here is the dilemma, I want to run a full screen game (Shadowbane) on two monitors under Windows Vista. I have gotten it to work to an extent, the problem is that the monitors are two different resolutions; one runs at 1680 x 1050 and the other at 1440 x 900. When I run the game in the lower resolution monitor it forces itself to run at 1680 x 1050, cutting off much of the picture. The question is, essentially, how can I run the two applications and different resolutions in each monitor? So far I have used UltraMon to accomplish what I have, and haven't found a way to address this by means of its features. Thanks.