When was the last time you purposefully used the Insert key on your keyboard??
Have you ever purposefully used it…
This key can also be disabled, and the easiest way is through Microsoft Word.
In Word 2003:
TOOLS >> CUSTOMIZE >> OPTIONS >> CATEGORIES (on left) >> OVERTYPE >> CURRENT KEYS area >> select INSERT and REMOVE
In Word 2007:
Office Button >> Options >> Advanced >> Editing Options >> Use Overtype Mode (it looks like this is not turned off as the default –yeah!)
– Troy @ TLC