This is such a dumb question that I hesitate to ask, but it's irritating me. The Windows machines at work all use Internet Exploder as their browser due to company policy. When I'm posting in this forum in IE, sometimes I accidentally hit a key or combination of keys that cause the computer to switch to a mode where, when I try to insert some text by moving the cursor back in a block of text and typing, it overtypes what I have already written instead of bumping the text in front of what I'm inserting. I don't know what the name is for this mode, so I can't look it up to find out what keys I'm accidentally pressing with my clumsy fingers. It's never happened to me in Safari or Firefox so the key combo must be easier to hit in IE. Any help?