Bob - If you are working in a word processor software, such as Word, you can usually find the letters by clicking and . Scroll down within the Symbol menu and you will eventually find other alphabet sets.

You can also insert them using ASCII codes. Do a search in your word processor for "ASCII" and it will tell you what keys to hit. These codes have to be updated periodically - for example, when the euro symbol was adopted. I think you can still find the "cents" symbol even though it no longer appears on modern keyboards.