Alt codes for MSN are fun to know and might even impress your friends. Alt codes will work in any MSN program including messenger. To make the Alt codes work, make sure your number lock is on. Once your number lock is on you can press Alt and 1 for a happy smiley, Alt and 2 a sad smiley, Alt and then 3 for a heart, Alt and 4 will make a diamond, Alt and 5 will make a spade. You can even work into
. the teens: Alt and 11 will make the male sign, Alt and 14 makes a music note. Keep trying out higher numbers to find out what else you can make.