1)Problem: a game appears too large for your screen, or any part of it is off center or cut off.
Games require a screen resolution of 1024 x 768 or higher.
Because the games require this screen resolution, if your monitor is set to a lower resolution, the games may appear to go off the screen, or appear to be too large for your screen. If this is the case, You want to change your monitor's screen resolution.
To switch your monitor resolution:
Right click on your opening screen, the desktop (not on any program or game or icon)
Select "Properties".
One there, select the tab "settings".
Once selected, look for something called "screen resolution". It may be a slider.
Try sliding it to "1024 by 768 pixels".
If you are able to do this, the games should fit on your screen without a problem.
Or, here are some links that can help you change your screen resolution to that
size, depending on your computer:
http://www.helpwithpcs.com/tipsandtricks/changing-screen-resolution-win-xp.htm
http://www.helpwithpcs.com/tipsandtricks/change_resolution_win_98.htm
http://www.apple.com/support/mac101/customize/4/
http://www.freeemailtutorials.com/microsoftWindows/changingScreenResolution.cwd
If your system is a different platform than these links provide, do a search for "screen resolution,
(system - mac, windows me, etc)".