Thank you for the response. AA = anti-aliasing, right? Do you recall the issue? I went in game and turned anit-aliasing off and set the resolution to Desktop, which did not change anything.
Installed the game (via Impulse and then Steam) on a Vista machine and it seems to work fine except that all the map except a little around the margins is white. The other screen elements, menus etc. and the minimap are functional, but the map is featureless white except a green fringe. This is in both the tutorial and a new game. Essentially, I am blind as to actually playing. Did a Windows Update for optional items, changed resolutions for the screen and in game