To specify autocorrect rules and exceptions to the rules, tap or click file to open the backstage view, tap or click , and then tap or click proofing in the dialog box that displays.

Hey there! Hello!

So, I'm assuming you're referring to Microsoft Office on Microsoft Windows for this question. I'm on a Mac, so the process is entirely different, since you go to the "Word" tab (to the right of the apple), click Preferences, then click on "AutoCorrect." No File tab needed. 

But, the blank (in the case of Windows) should have "Options" in it. The process involves clicking open the File tab, then clicking Options, then Proofing, then "AutoCorrect Options."

Hope this helped you out! Feel free to ask me any additional questions if you have any. :-)

Umm i believe it is 3 windows is the best but vista doses do updates anymore i believe and i hope it is right and holo it