I am new to ArcGIS and have been to the basic courses but I'm not understanding how to get my Excel spreadsheet into my Arcmap. I have created a spreadsheet that has longitude and latitude decimal format that I am wanting to be able to plot on my map. I can get the data into the map but it does not appear to be plotting correctly. My X axis is my long and my Y axis is my lat, I have the coordinate system set. Please help.