Most US keyboards only contain one currency symbol that you can enter: the dollar ($) symbol. You can however, enter additional currency symbols from the Symbol dialog box: click the Insert tab on the Ribbon, click the Symbol button and then More Symbols from the Symbol button menu.
This however, can be a tad time-consuming trying to find the symbols you want to use. If you use certain currency symbols often, it might be a good idea to memorize their keyboard shortcut. Most symbols have an equivalent keyboard shortcut associated with them, which is displayed on the bottom of the Symbol dialog box when the symbol is selected. For instance, to insert the Euro symbol you would hold down the Alt key and type 0128 on the numeric keypad – NOT the numbers on top of the keyboard.
Some common symbols you may wish to memorize:
Euro – Alt + 0128
British Pound – Alt + 0163
Japanese Yen – Alt + 0165
Applies to Word 2010, 2007, & 2003