How do you change it so that when you press shift and 3 you get a £ sign instead of #
From Wiki...
On UK Apple Mac keyboards, this is reversed, with the "£" symbol is on the number 3 key, typed using Shift+3, and the number sign ("#") being generated by Option+3. Under Microsoft Windows it can be generated through the Alt keycodes 0163 and 156, and in MS-DOS by Alt-156.
The Compose key sequence is 'L' and '-'.
From Wiki...
On UK Apple Mac keyboards, this is reversed, with the "£" symbol is on the number 3 key, typed using Shift+3, and the number sign ("#") being generated by Option+3. Under Microsoft Windows it can be generated through the Alt keycodes 0163 and 156, and in MS-DOS by Alt-156.
The Compose key sequence is 'L' and '-'.