Question : make Excel not convert certain character strings to non-ASCII

When typing, Excel is changing three periods ... into the ellipsis character. Also changing single and double quotes ' and " into typographer's quotes. This causes problems exporting to another database. How can I make Excel force to only ASCII as I am adding data? Thank you.

Answer : make Excel not convert certain character strings to non-ASCII

ps - Also check those other characters in the same AutoCorrect dialogue box and make sure they are not being replaced with the incorrect characters.