You must be holding down numbers 1 through 4 (not on NumPad)
while performing the cheat. At the Stadium Select screen, move all the
way to the right, displaying the last 9 parks. Click on the following
stadiums in order: Houston, Atlanta, Philadelphia, Pittsburgh,
Atlanta, and then Montreal. You should hear a voice say "Triple Play
99." Now move back to the right to find the three new ball parks.
Hold down 1, 2, 3 & 4 keys (not the ones on the NumPad) while the
following cheats are being performed. Left, Right, Down and Up are
performed with the arrow keys (not the ones on the NumPad).
Mammoth Homerun Tab, Shift, Tab, Alt, Ctrl, Shift, Left, Right.
Do this while the batter is walking to the batters box or while
he is in the batters box.
Easy Strikeout Up, Down, Tab, Shift, Tab, Alt, Ctrl, Shift.
Do this while you're on the mound.
Commercials Left, Shift, Right, Alt
Nicknames Alt, Right, Shift, Left
Stadium info Down, Ctrl, Right, Alt
Weather Ctrl, Down, Tab, Up
A Story Up, Tab, Right, Alt
Big Cheer Shift, Left, Left, Shift
Little Cheer Tab, Up, Up, Tab
ooh! Ctrl, Down, Down, Ctrl
boo! Alt, Right, Right, Alt
Rounding the bases after a homer
d to make the crowd whistle
s to hear a piano
a to hear a horn
w to hear a bigger horn