MS Word 2003 automatically starts while the user is typing

The spell checker in my MS Word 2003 automatically starts while the user is typing.
I checked on the settings of Auto Correct, and everything seems to be on set.
I asked if the shortcut key F7 is accidentally pressed, but it doesn't seem like it was the issue.
She uses Remote Desktop through a Windows XP computer.
Its server and MS Word is version 2003.
Any kind of help will be much appreciated.
