options, smart tags, confusion

Endnote X4

Office/word 2010

Macbook Pro Snow Leopard > Parallels > WIndows 7 Home Deluxe

My inline citations have gone a little whacky.  Sometimes just the last name (as should be the case) shows up, sometimes the whole name. I went to help to try to figure it out, and went through the directions on how to check whether instant formatting was turned on in Word 2010.

The Endnote help instructions (for 2007/2010 both)  say: go to options, then the proofing tab and then select the “smart tags” tab.

Which is where I stopped, because as far as I can see, there is no “smart tags” tab under proofing options or anywhere else. Could someone possibly point me in the right direction, please?