When typing charactures next to the cursor are deleted

[Battersea Dave-Pudsey]

When typing charactures next to the cursor are deleted ? how do I stop this

 

[Stefan Blom]

Turn off Overtype mode, for example by pressing the Insert key (if you are
using Word 2007, Insert key cannot be used for this purpose though).

 

[Luc]

Battersea Dave-Pudsey,
Hit the Insert key on your keyboard, or doubleclick the indicator
insert/overtype at the bottom of your screen on the status bar.
Luc Sanders
MVP-PowerPoint