I don't know if it would be different for any other OS, but as for Microsoft XP Professional, here I go.
To bedazzle and memorize, here they are as they appear in Chat:
Alt + 1
| =
| ☺
| Alt + 2
| =
| ☻
| Alt + 3
| =
| ♥
| Alt + 4
| =
| ♦
| Alt + 5
| =
| ♣
| Alt + 6
| =
| ♠
| Alt + 7
| =
| •
| Alt + 8
| =
| ◘
| Alt + 9
| =
| ○
| Alt + 10
| =
| ◙
|
| Alt + 11
| =
| ♂
| Alt + 12
| =
| ♀
| Alt + 13
| =
| ♪
| Alt + 14
| =
| ♫
| Alt + 15
| =
| ☼
| Alt + 16
| =
| ►
| Alt + 17
| =
| ◄
| Alt + 18
| =
| ↕
| Alt + 19
| =
| ‼
| Alt + 20
| =
| ¶
|
| Alt + 21
| =
| §
| Alt + 22
| =
| ▬
| Alt + 23
| =
| ↨
| Alt + 24
| =
| ↑
| Alt + 25
| =
| ↓
| Alt + 26
| =
| →
| Alt + 27
| =
| ←
| Alt + 28
| =
| ∟
| Alt + 29
| =
| ↔
| Alt + 30
| =
| ▲
|
|
Alt + 31
| =
| ▼
| Alt + 32
| =
|
| Alt + 33
| =
| !
| Alt + 34
| =
| "
| Alt + 35
| =
| #
| Alt + 36
| =
| $
| Alt + 37
| =
| %
| Alt + 38
| =
| &
| Alt + 39
| =
| '
| Alt + 40
| =
| (
|
| Alt + 41
| =
| )
| Alt + 42
| =
| *
| Alt + 43
| =
| +
| Alt + 44
| =
| ,
| Alt + 45
| =
| -
| Alt + 46
| =
| .
| Alt + 47
| =
| /
| Alt + 48
| =
| 0
| Alt + 49
| =
| 1
| Alt + 50
| =
| 2
|
| Alt + 51
| =
| 3
| Alt + 22
| =
| 4
| Alt + 53
| =
| 5
| Alt + 54
| =
| 6
| Alt + 55
| =
| 7
| Alt + 56
| =
| 8
| Alt + 57
| =
| 9
| Alt + 58
| =
| :
| Alt + 59
| =
| ;
| Alt + 60
| =
| <
|
|
Under construction.
