I got a bit nostalgic and wanted to run an older game on my new-ish Vista compu. It's called Disciples2 (Rise of the Elves). I managed to set it up without any problems or prompts, but when I actually run the game it's as if the display is not centered in the middle; instead everything is moved a couple inches to the left, which means that on one end it falls off the screen and on the other end there's a big black bar. I did install it twice, so the second time it got auto-compatibalized, but the effect was still there. Is there anything (easy) I can do to fix this? It may be because of the widescreen monitor, but I can't adjust the game settings because, um, the controls sit at the very left of the screen... 
Apologies for the jumbled description; hope someone can help.

Apologies for the jumbled description; hope someone can help.