Answers:
Go to the Insert menu and select Symbols. Click on the Symbols tab. On the subset dropdown menu, select Latin-1. You will find the upside down exclamation point in the 1st column, 3rd row. The upside down question mark is in the second to the last column, bottom row. If they aren't popping up in these positions, move the scroll bar until you see them. There is lots from which to choose.