Since I own two widescreen monitors, I have found the need to “tweak” some games into widescreen support. (Mainly this is with older games that is a problem)
By far the best place on the internet that I have found is Widescreen Gaming Forum they have a master game list that you can see if a game you are thinking about getting suppoorts widescreen resolutions.
**TIP** Going into the game’s system file and editing the .ini file, you can sometimes get games to work by simply plugging in the desired resolution into the fields and saving file.