Bigmamma has answered your question but I gave up on using the character map ages ago. I've printed off this web page and I keep it next to my keyboard:
http://www.tedmontgomery.com/tutorial/ALTchrc. html
To type any unusual character, I look it up in the list (which takes no longer than finding it in the character map) and then hold down the Alt key while typing the relevant number on the numeric keypad. (It doesn't work if you use the number keys at the top of the keyboard). Releasing the Alt key makes the character appear. (Note: The numeric lock must be on but PC s boot up with it turned on by default anyway).
After a while, I've started to remember the most commonly used Alt characters. e.g. I know that � is Alt+171 and � is Alt+130. So typing them takes hardly ant time at all. I find this method far easier than messing about with the character map.
Chris