From one of my projects (a very early revision, but you don't need the game anyway) using rojohound 's method: puzzle.rar
It is a bit more complex but very comfortable for the player. The game starts with a low res start screen where you can access the options to change the resolution, sound or music volume. Only when clicking new game or continue it actually changes to this new resolution, presenting the game.
You have to deal with german text in the start/option screen, I'm afraid. Click on "OPTIONEN" to get to the options screen. In the options screen "?BERNEHMEN" stands for "ok" and "ABBRECHEN" for "cancel".
In the game screen the 'esc' key will exit the game.
Hope it helps <img src="smileys/smiley1.gif" border="0" align="middle">