To change the high score in minesweeper you have to open the file "winmine.ini". once you have opened it change the name and time given at the bottom of the file.
The next time you open minesweeper your name with the best time will be displayed
With your cursor inside the minesweeper window
type "XYZZY" then press Shift-Enter and Enter.
A white dot should appear in the upper-left corner
of the screen. If it turns black, your cursor is
resting on a mine.
This trick works best if your Windows background
For sound effects, add the line "SOUND=3"
Stop the Clock:
While playing, hold down the left and right mouse
buttons and you should see a 3x3 square imprint on the board. Next hit the ESC key while holding down both mouse buttons, and the timer is stopped!