Problem Solved: It appears that I accidentally extended/stretched/expanded the index grid beyond the boundary of the map layout. I simply re-sized/reduced/shrank the index grid back down to witing the map boundary. I now have the index grid tabs included in my exported map.Thanks.ArcGIS 10.0 (student version), Arc InfoI have attached the PDF version of the map. As you can see, the grid lines were included.I created an 8x8 grid, like so:___1 2 3 ...A|B|C...I will post a screenshot of my map layout and my grid components later today once I return to my computer. My ultimate goal is to include the index grid tabs around the border of my map so that when users refer to the data in parenthesis [within the legend] they can navigate to that feature quickly.