French letters are alphabet letters that are unique to the French language. These letters have extra symbols added to letters that English speakers are familiar with. Traditional QWERTY keyboards on computers do not generally have the extra letters on them, but can be set to type French characters. It is simply a matter of changing the keyboard language settings to French.
Open the Windows Control Panel. Double-click on "Regional and Language Options."
Click on the "Keyboards and Languages" tab located at the top of the window. Click on the "Change Keyboards" button to open the "Text Services and Input Languages" window.
Click the "Add Button" to open the "Add Input Language" window. Select French as your input language and click on the "OK" button to exit the window.
Mark your keyboard. If you do not already have the French alphabet marked on your keyboard, click on "Preview" to show a map of the French keyboard. Use this as a guide to mark your keys with stickers or a marker pen to be able to locate the individual letters.
Change the computer input language. Click on the language bar that is located next to the system tray on the Windows taskbar. Set the input language to French.